COMPOST TEA: SNAKE OIL OR ELIXIR? BLACK CURRANTS…

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Tea For Plants?

Has your garden had its tea this morning? Tea is all the rage for plants and soils these days. Compost tea. And not just any old compost tea, but tea you steep in water that’s aerated just like an aquarium.

Compost tea steeped the old way, by hanging a burlap sack of compost in a bucket of water for a few days, was one way to provide a liquid feed to plants. The liquid feed wasn’t particularly rich but did provide a wide range of nutrients that leached from the compost, and was convenient for feeding potted plants.COMPOST TEA MAKING

The new, aerated compost teas are billed as an efficient way to transfer beneficial microorganisms from compost into the soil or onto plant leaves. After all, spraying a little tea is less work than pitchforking tons of compost. In the soil, the little guys can spread their goodness, fighting off plant diseases and generally making plants healthier. Or so goes the logic and the promotional material.

Aerated compost tea (ACT) is big business these days, with people selling compost tea, compost tea brewers, and services for testing compost teas. Compost tea is more than big business; it’s bordering on religion (as anyone who criticizes compost tea soon finds out).

In fact, aerated compost tea is not the panacea it’s trumped up to be. Many independent studies have found the tea to be of no benefit, or even detrimental. Occasionally, human pathogens have been found lurking in compost tea.

In The Interest Of Science

I have a friend who believes in compost tea, so in the interest of science I agreed, on his urging, to try it out. To make sure any lack of efficacy could not be blamed on the tea itself, he sent me some compost, a brewer, and instructions for brewing and application. Interestingly, he told me not to try it out in my vegetable garden, because my garden was “too organic”(!)

Long story short: I applied tea to my lawn and to some vegetables in a relatively poor soil at a local farm, and the result was . . . (drum roll) . . . nothing, nada, rien, zip.

Tea Doesn’t Make Sense

All the buzz about compost tea bypasses the fundamental question of why compost tea would limit plant disease when sprayed on plant leaves? The theory goes that the good microorganisms colonize leaves to displace and/or fight off the bad guys.

Compost tea contains some of the microorganisms from the compost that made the tea. These microorganisms are normally found in soils and, of course, composts. But why, evolutionarily speaking, would these microorganisms provide any benefit on plant leaves, for disease control or any other purpose? Furthermore, these microorganisms evolved in a dark, nutrient and moisture rich environment. Why would they survive on a sunny, dry, nutrient poor leaf? The same goes for soils: If the soil has the right environment for a particular set of microorganisms, they generally are there; apply microorganisms to a soil lacking the needed environment and those microorganisms cannot survive.

Occasional research papers report positive effects of compost tea for thwarting plant diseases. I contend that if you spray just about anything on a plant leaf and measure enough plants closely enough, you’ll turn up some measurable response to the spray. That response might be very transitory and very small, but, with the right equipment or instrumentation, you’ll measure some effect. Whether that effect is of biological or practical significance is another story.

With that, I suggest someone begin a series of experiments to see the effect on plant diseases of spraying — say — milk solutions on plant leaves. Wait! A web search tells me that milk sprays have been tested and are, in fact, effective in controlling plant viruses, powdery mildew, and other diseases. In contrast to compost tea, which provides microorganisms but little of the food they need to survive, milk provides a smorgasbord of nutrients to whatever microorganisms tag along for the ride.

On the basis of the evidence, I’d go with milk rather than tea for my plants. And I’ll take my milk without tea.

Black Currants, Mmmmm

Moving on to something noncontroversial, my first black currants of the season ripened June 26th this year. Come to think of it, black currants may not be noncontroversial. Black currants have a strong, very

Belaruskaja black currants

Belaruskaja black currants

distinctive flavor, loved by some people, abhorred by others. The flavor starts out refreshingly tart as your teeth break the skin and then becomes sweeter and cooling, with a rich, resiny flavor, as you continue.

I count myself among the lovers of black currants, right up there

 with blueberries in my book. Black currants earned a whole chapter in my book, Uncommon Fruits for Every Garden. Although humans are divided on whether or not they enjoy fresh black currants, pretty much everyone loves the fruit concocted into jams and baked goods. They also flavor the liqueur cassis, I’ve used them to flavor beer.Black currant & Forget-me-not

Let’s be clear about the fruit in question. Black currants are not the same fruit as “dried currants.” Those currants are raisins made from dried Black Corinthe grapes, a name which was bastardized to “black currant.”

Black currants are borne on medium-sized bushes whose leaves, when brushed against, emit a strong, also resiny aroma. The leaves are sometimes brewed into tea — for humans, not plants.

GOOD FUNGI, BAD WEEDS

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Myco . . . What?

There’s a fungus among us. Actually, fungi, all over the place. Right now, though, I’m focussed on a special group of fungi, a group that, as I look out the window on my garden, the meadow, and the forest, has infected almost every plant I see. Like so many microorganisms — most, in fact — these fungi are beneficial.

The fungi are called mycorrhizal fungi; they have a symbiotic relationship with plants. (“Mycorrhizae” comes from the Greek “myco,” meaning fungus, and “rhiza,” meaning root.) The plant and the fungus have an agreement: The plant offers the fungus carbohydrates which it makes from sunlight, carbon dioxide, and water; in exchange, the fungus infects plant roots and then spreads the other ends of its thread-like hyphae throughout the soil to act to be virtual extensions of the roots. The plant ends up garnering more mineral nutrients from the soil. The fungus also helps offer protection against pests and drought. It’s an arrangement that has worked for eons.

Except for where soil has been doused with heavy doses of pesticides or discombobulated by land excavation, mycorrhizae are everywhere. Only a few plant families get along without this symbiosis. Some more familiar, nonmycorrhizal plants include cabbage and its kin, carnations, lamb’s-quarters, and sedums. Other plants can grow without mycorrhizae, but then miss out on some of the benefits and don’t make most efficient use of minerals soil has to offer.

Why mention mycorrhiza at this moment of time? Two books on mycorrhiza were published this year; either one, but not both, are worth reading. Both cover the kinds of mycorrhizae, their effects, their nurturing, and probably everything else you might want to know about this symbiosis.

Michael Phillips’ Mycorrhizal Planet will appeal more to the hip gardener, the one who burns wood for biochar for their soil, builds hugelkultur mounds (look it up), and spritzes plants with herbal extracts to boost their immune function. He’s mostly right when writing about mycorrhizae but often enters the land of woo-woo when venturing off-track. For instance, he writes, and then runs with, “many species of insects lack the digestive enzymes needed to break down complete proteins.” Not true.

The other book about mycorrhizae, Jeff Lowenfels’ Teaming with Fungi, presents a similar overview to mycorrhizal fungi, and their application, to that presented in Mycorrhizal Planet, with one notable difference. Teaming with Fungi details straightforward methods how you or I can actually grow our own mycorrhizae with which to inoculate plants to get them off to the best possible start.

The two books differ dramatically in their writing style. I eventually tired of Phillips’ overly flowery style and anthropomorphizing. “The synergy that unfolds as a result of outrageous diversity in the orchard delights me to no end . . . .The root systems of fast-growing tree with relatively pliable wood make barter possible between AM [arbuscular mycorrhize] and EM [ectomycorrhizae] fungi.” Lowenfels’ Teaming with Fungi is more firmly grounded in real science and application than Mycorrhizal Planet. I found Lowenfels’ writing more straightforward and engaging: “Some trees form AM, but others have evolved over time and are hosts to EM. Some trees are hosts to both forms of mycorrhizae, though usually at different periods in their lives.” (Different strokes for different folks.)

The mycorrhizal symbiosis was first studied and described in the latter half of the 19th century. Less long ago, but still long ago, I studied them as part of my doctoral work, specifically the ericoid mycorrhizae that are specific to blueberry plants and their kin. With the increased appreciation of the diversity, extent, and effect of the living world within the soil in recent years, mycorrhizae have moved into the spotlight. Read about them, nurture them, and make use of them.

And Weeds Among Us

Rising now to see what’s going on aboveground, I see that the garden has moved mostly into its maintenance phase for the season. That entails mowing, scything, making compost, keeping an eye out for pests and taking action, if necessary. 

And, of course, weeding. My weeding weapons of choice are my hands, for larger interlopers, and either the winged weeder hoe or wire hoe for small ones. Called into action weekly, either of the two hoes easily slice through the top quarter inch of soil surface to do in small weeds that haven’t even yet poked their heads above ground. Wire weeder, winged weederAll the better to forestall the appearance of large weeds, which are much harder to kill and also threaten to spread seeds or grow strong roots. Regular hoeing also keeps the soil surface loose to better absorb rainfall.

Early July seems to be when true gardeners part ways with other gardeners. Regular weeding  and other garden maintenance keeps the garden in good shape for the fall garden which, with good maintenance and planning, is like having a whole other garden, providing vegetables and flowers well into fall.

THE GOOD OL’ DAYS

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Corn Made Even easier

I can understand why corn was so popular a crop early on in the settlement of our country by Europeans. Sure, it tastes good popped, ground and cooked, and, while immature, fresh from the cob. Mostly, though, corn was easy to grow in the rough soil left from recently cleared forest.

Most of my corn grows in my two vegetable gardens where the soil is crumbly and weed-free, watered gently by drip irrigation, and nourished annually with an inch depth of compost.

Highly cultivated sweet corn

Highly cultivated sweet corn

The south garden is home, every year, to a couple of beds (about 60 square feet) of popcorn, and the north garden to 4 beds (about 215 square feet) of sweet corn. Those two gardens provide us with all the sweet corn and popcorn we eat for a year.

Separate gardens are needed because if sweet and popcorn cross-pollinate, the sweet corn will be less sweet and the popcorn won’t pop as well.

I also grow polenta corn, an heirloom Italian variety called Otto File. But I only have two vegetable gardens. So this corn goes out in the field into the weedy soil between my dwarf apple trees. Conditions there aren’t as rough as cornfields wrought from forests in colonial times, but out there the corn must deal with weeds, grasses, rabbits, and drink only water that falls from the sky.

I did not use colonial methods to ready the soil for planting. Instead, I mowed all vegetation to the ground, and covered the planting areas, 2 beds each about 3 feet wide for a total of about 100 square feet of planting, with gray resin paper. (Sometimes called building paper, gray resin paper is used in construction, usually as underlayment under flooring and siding.) I topped the paper with an inch or so of compost, then made two rows in each bed, in each row poking holes 2 feet apart into each of which I dropped 6 Otto File seeds followed by a sprinkling of water.

The seedlings are up and looking strong, so I thinned them out to 3 or 4 plants per hole, pulling out a few weeds as I thinned. I’ll weed one or two more times and then leave the plants to themselves. Weeds will grow, but the then-tall corn plants should shade some into submission and hold their own against the more aggressive ones.Otto File planted in field

For authenticity, yes, I could have buried some fish in the ground at each planting hole. But that would be more work, and I’m interested in production with minimal effort from that planting. Each year those beds have provided a year’s supply of polenta corn.

Apple Threats

Apple trees flanking the Otto File beds are loaded with a hopeful crop of cherry-sized fruits. The dreaded plum curculio, which is as happy to ruin a crop of apples, peaches, nectarines, or cherries as well as plums, should have ceased their egg-laying by now, and burrowed into the soil to prepare for next year’s onslaught. (Surround® is an organically approved spray of specially formulated kaolin clay that controls curculios.)

Just because the nascent fruits have come along this far does not mean I’m home free. Apple maggot reliably makes its appearance just as the curculios vanish. This pest doesn’t usually make the fruit drop, as do curculios, but it riddles the fruit with so many tunnels that you can’t even eat around them.

Maggot & curculio scars

Maggot & curculio scars

Fortunately, non-chemical control of apple maggot is easy. In the 1980s, Dr. Ron Prokopy, at the University of Massachusetts, discovered that Ms. Maggot was attracted to the reddest apples, so he tried  hanging croquet balls painted Tartarian Red and coated with forever-sticky Tangletrap® in apple trees. Maggots tried to lay eggs in the ersartz apples, where they expired, their mission unfulfilled. The spheres offer as good control as do chemical sprays.

In the last few years, I’ve used Tangletrap® coated, real Red Delicious apples as traps. They are very red and very apple-like. Hung in the branches, one per dwarf apple tree, they last almost the whole season and, when the season ends, can be composted rather than scraped clean for use the following year.Red Delicious maggot trap

Apple maggot isn’t the only remaining threat to my apples. There’s also the codling moth (the classic worm in the apple), apple scab (that’s what it looks like), and various summer rots.

Once Upon A Time

Oh, for the good ol’ days when the grass was greener, the corn was sweeter, and apple trees took care of themselves. Mostly, the good ol’ days weren’t the various “-ers.” But one exception was the apple maggot. Two hundred years ago, Ms. Maggots didn’t look twice at apples. This native insect was happy to attack our native hawthorns, which are related to apples.

When apples were introduced to this part of the world, some apple maggot flies tried them out. Over time, some began to favor apples over hawthorns, so much so that the maggots evolved into two tribes, one favoring hawthorn and the other apples. Oh well.

I’M AN INGRATE, AND RUTHLESS WITH FRUITLETS

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Great Asparagus Does Not Require A Green Thumb

Not to be an ingrate or a braggart, but the asparagus some friends recently brought over for our shared dinner didn’t compare with my home-grown asparagus. Not that the friends’ asparagus wasn’t good. Theirs came from a local farm, so I assume harvest was within the previous 24 hours. Asparagus harvestBut the stalks of my asparagus are snapped off the plants within 100 feet of the kitchen door, clocking in at anywhere from a few minutes to an hour of time before they’re eaten. It’s not my green thumb that makes my asparagus taste so good. It’s the fact that I can harvest it within 100 feet of my kitchen door.

But don’t take my word for it. Research has shown that asparagus spears begin to age as soon as they’re picked, the stalks toughening and sugars disappearing, and bitterness, sourness, and off-flavors beginning to develop. Yum.

Taste is just one of the many reasons to plant asparagus. Here’s more: Deer and other wildlife leave it alone so it doesn’t need to be corralled within a fence; the ferny foliage that needs to be let grow after harvest ends in early July makes a soft green backdrop for colorful flowers; a planting can pump out stalks from the end of April till the end of June (around here) for decades.Asparagus in August

Asparagus’s two potential problems are relatively minor. The first is asparagus beetle, a beetle whose eggs, which look like black specks on the stalks, hatch into slug-like young that feed on the stalks. I keep this bugger in check by picking every single stalk — even spindly, inedible ones — every time the bed is harvested. The beetle, then, has nowhere to lay her eggs. (Not in my bed, least; she can seek out some wild asparagus here and there.) And then, at the end of the season, I cut down all the browned, ferny foliage and cart it over to the compost pile, in whose depths the adults, some of which overwinter in the old stalks, meet their demise.

No pesticides, organic or otherwise, have ever been sprayed on my asparagus, so natural predators also can do their share of making asparagus beetles a non-issue. Hand-picking beetles and larvae, which I’ve never had to resort to, is another way to keep the beetles in check. (My ducks may have a “hand” in that.)

Weeds are the other potential problem in an asparagus bed. One of the worst weeds in any bed is  . . . asparagus! Each red berry dangling from the stems of a female asparagus plant houses a number of seeds that, once they hit ground level, can sprout to make new plants. The cure is to plant an all male variety of asparagus, such as Jersey Giant or Jersey Prince.

Unfortunately, a package of an all male variety can contain a few females. So, in addition to planting an all male variety, the cure for weeds is straightforward: Weed! I keep my bed regularly weeded during harvest season, then only occasionally weeded once fronds start to make the bed almost impenetrable.

Off With The Fruitlets (Some, At Least)

The slow but steadily increasing warmth this spring has been ideal for tree fruits (not so much the rainy weather). A bumper crop of fruitlets perch on branches of my apple and pear trees. It’s time to remove most of them.

These plants are genetically programmed to set more fruits than they could possibly have the energy to ripen. Spring presents many hazards to those blossoms, including killing freezes and insect pests. So, come June, when some of these threats have passed, fruit trees naturally shed excess developing fruitlets. But not enough.

The trees’ goals are to make seeds to make new trees. The seeds are enclosed within fruits that appeal to wildlife, who then help disperse the seeds. Those fruits might be good enough for wildlife, but not for you and me. For larger and more flavorful fruits, even more need to be removed than are shed by the “June drop.” Only 5 to 10 percent of apple blossoms need to set fruit for a full crop.

So I’m spending some time pinching or snipping off excess fruitlets, saving those that are largest and most free from blemishes, with a few inches between those that are left.Thinning apples

Fruit thinning is not only for flavor. A large crop one year bodes for a small crop the following; fruit thinning evens out any feast and famine cycle. The thinning also reduces some pest problems caused by fruits hanging too close to each other.

Pros And Cons Of Bad Weather (For Humans)

The recent spate of rainy weather has been accompanied by cool temperatures, which some plants enjoy and others wait out. Peas, cabbage, kale, and radishes are having a grand old time; sweet corn and beans wait out the cool weather. Flowering alliumsThe most dramatic response has been in the delphiniums, dames rockets, and giant alliums. With cool temperatures, their colorful displays go on and on.

Asparagus doesn’t mind hot or cool weather. The cool weather does slow down spear production, which made for insufficient harvest to share the day my friends came to dinner.Delphinium at back of garden

STEPPING INTO SPRING

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Cleanup Time Re-Starts in Veggie Garden

Warmer weather, even if it’s not all that warm, makes me feel like spring is just around the corner. The ground — in my vegetable beds, at least — isn’t even frozen, no doubt because water doesn’t linger long in the well-drained soil and because the dark-colored compost blanket I laid down in autumn sucks up the sun’s warmth.

So yesterday seemed like a perfect time to continue the garden cleanup that screeched to a halt when frigid weather struck, and some snow fell, a couple of months ago. Old cabbage heads that never quite ripened were laying on the ground like ratty, pale green tennis balls (with stalks attached). The four-foot-high stalk of one Brussels sprouts plant, stripped in autumn of its sprouts, stood sentry like a decrepit soldier in the same bed.Kale in winter

Of course, kale also still stood, except for those that flopped to the ground under their own weight. The latter were mostly the variety Tuscan (Lanciata). The Dwarf Blue Scotch plants, which I think taste better, stood more upright and compact, helped along, I’ll admit, with some bamboo stakes pushed into the ground next to them back in summer. I dug up the Tuscan kale plants and stripped yellowed and flaccid leaves from the Dwarf Blue Scotch plants. My guess is that by April they’ll be unfolding new, tasty leaves.

Stepping over to another bed, I twisted or coaxed out, with the help of my Hori-Hori knife, stumps from harvested lettuce and Chinese cabbage. A row of arugula in that bed showed enough life to awaken in spring with fresh, new leaves. I left it.

All this cleanup gets a jump on spring and removes debris that might harbor insect or disease pests that could infest or infect this season’s plants. The debris went into my garden cart and thence to the compost pile. The winter pile doesn’t heat up, so I’ll give the bacteria, fungi, actinomycetes, and earthworms two years to get their jobs done, killing off any “bad guys.”

Cursed Voles!

Stepping over to the remains of the endive bed that I planted towards the end of last summer and began harvesting in October — what havoc has been wreaked!

The bed had been covered with a tunnel of clear plastic and row cover to provide extra warmth to the plants in cold weather. Extra warmth also to some furry creatures, it seems.

Taking off the cover, I saw a bed riddled with tunnels along with the scattered remains of unharvested endive plants. This has happened in the past; something about endive seems particularly attractive to the furry creatures (and to me), which I assume are voles, which are mouse-like creatures.Endive with mouse damage

My garden must be vole heaven. The cat rarely hops the garden fence to hunt because she has to cross the DMZ zone to get to the garden, and she’s scared of our dog, Sammy. The compost-enriched soil has plenty of earthworm for good eating, as well as all the tasty, organic produce. So far, though, the voles have been satisfied with just the endive.

Short of planting the cat in the garden, which Sammy can’t enter, my plan is to do extensive trapping. One web site recommendation for a small garden is for twelve traps baited with oatmeal and peanut butter, or with apple.

As consolation, vole populations are said to decline after 3 to 5 years. It’s almost time, although the declined population might still be too many for me. And all is not bad with voles; they help stir the soil to distribute nutrients.

Pre-Season Warmup

While in the garden, I also did some pre-season weeding. Creeping Charlie, which enjoys cool weather, is always sneaking in here and there once I turn my attention away from the garden.

All this garden cleaning and straightening up isn’t all for practicality. It makes the view of the garden each morning from my second floor bedroom window prettier.

 

IN WITH THE NEW, STILL WITH THE OLD

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Scale Attack Beginning!

As if to ring in the new year, scale insects are starting to make their presence known. These insects crawl around as babies, find nourishing spots on leaves or stems, insert their feeding tubes, and then spend their days sucking plant juice. Carbohydrates and sugars are what result when sunlight and chlorophyll get together, so longer days may already be making plant sap sweeter and more plentiful, much to the liking of these suckers.

Armored scale on staghorn fern

Armored scale on staghorn fern

I encounter two kinds of scales on my houseplants. Each armored scale looks like a small, raised, brown tab. Cottony cushion scale looks like a small tuft of white cotton. As either kind feeds, it exudes a sweet honeydew that drips on leaves, furniture, and floor, and eventually becomes colonized with a fungus that airbrushes those sticky drippings an unappealing smokey haze.

(Scale insects are often problems on trees and shrubs outdoors. I’ve never had any problems outdoors probably because natural predators, of which scale insects have many, can do their job. Once indoors in autumn, houseplants lose the benefits of these natural, outdoor predators. )

Repeated sprays last autumn of “horticultural” oil smothered the creeping, crawling baby scales as they were looking for homes on houseplants. I do all this spraying outdoors, where it is most convenient, before the plants come indoors for winter. None have turned up yet on the kumquat or the staghorn fern, both of which have been scale magnets in the past. I don’t see any on the bay laurel, another magnet, but I do see and feel the tell-tale sticky honeydew.

And . . . Counterattack

Cute, little white tufts of cottony cushion scale are starting to dot the undersides of strawberry guava’s leaves. It’s not surprising: I received this plant last autumn, already with scale, and it was too late then to start spraying with oil. As autumn progressed, the undersides of its leaves became increasingly covered with those white tufts.

Cottony cushion scale

Cottony cushion scale

Repeatedly, over the last few months, I have fought back the buggers mano a mano by dipping cotton swabs in alcohol and methodically cleaning them off each leaf. (The plant is young and its leaves are large and few.) The last cleaning was especially thorough but some eggs evidently survived. Time to get out the alcohol and swabs again.

Mmmm, Tomatoes, In Planning Stage

Like the scale insects, I feel the distant tug of spring and spring seed orders are complete. With most vegetables and flowers, I’m pretty picky about variety so have to rely on mail order sources for my seeds.

And especially so with tomatoes: I refuse to waste time and space growing anything but the best tomatoes (to me), which makes me very wary of trying new varieties. My own tried and true varieties — flavor is what I’m after — include Belgian Giant, Sungold, Anna Russian, San Marzano, Amish Paste, Rose de Berne, Nepal, Valencia, Cherokee Purple, and Blue Beech.Heirloom tomatoes

Every once in a while I’ll also grow a few others, but only if they come highly recommended from a reliable source and especially if they are an “oxheart” or “black” fruited variety. Not even worthy of consideration is any “determinate” variety because their leaf to fruit ratio is too low for good-tasting fruit. The seed catalog or seed packet itself should say whether a variety is determinate or indeterminate. This year’s tomato newbies include Rosella Purple and Dwarf Sweet Sue, both recommended by a reader of this column.

I highly recommend growing tomatoes from seed. It’s easy, especially if the seeds are sown in a timely manner, which is about 6 weeks before the average date of the last killing frost of spring — about April 1st here in USDA Hardiness Zone 5.

 

Onions, Last Year And This Year

It’s really not all that early to be ordering seeds. My date for sowing onion and leek seeds is February 1st. New York Early, Copra, Sweet Spanish, and Ailsa Craig are three onion varieties that did well for me last season, and will be returning for an encore. Last summer’s onions still hang in braids from the basement rafters, ready to be pulled off as needed to chop into a pan for roasting with sweet potatoes, into the soup pot with chickpeas and kale, and other savory dishes for weeks to come. Onion braids in basement

 

FRUIT HARVEST, WHEN?

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Easy to Grow, Hard to Harvest

    Of all commonly grown tree fruits, pears are the easiest, mostly because they succumb to fewer pest and weather problems than do other common tree fruits. Of all commonly grown tree fruits, pears are the most difficult to harvest.
    Timing is what makes pears so difficult to harvest, a skill I’m ashamed to admit I have yet to master. You can’t time when to pick by taste because pears are among the few fruits that will not ripen well on the tree. They start ripening from their innards outward so by the time the outside of the fruit looks and feels ripe, the innards are brown mush.

Concorde European pear, ripe?

Concorde European pear, ripe?

    No need to refer me to the guidelines of experts: The skin should undergo an almost imperceptible change in color, lightening or yellowing. The fruit softens ever so slightly, going from the firmness of a basketball to that of a softball. The fruit stalk separates readily from the stem when the fruit is lifted and given a slight twist. And finally, in my opinion the most obtuse indicator, lenticels (small pores on the skin) change from white and raised to brown and shallow. Yadda, yadda, yadda, . . .
    I grow about 20 varieties of pear, and each of those very subtle indicators are slightly different for one variety to the next.
    Another of my excuses is that most of my varieties are just beginning to bear so I don’t have a lot of fruits from each tree to play around with. I am adept at harvesting those varieties — Magness, Seckel, Harrow Delight — that have borne the most fruit for the most years.

Easy to Grow, Easy to Harvest

    Ah, but my horticultural shortcomings don’t extend to all pears. I also grow a few varieties of Asian pears, which differ from the aforementioned and more common European pears in being usually round and of a few different species. Most significantly, Asian pears will ripen to perfection on the tree. In fact, for best flavor, they must remain hanging until dead ripe, at which point they have a “cracking” texture, that is, they are crisp but explode in your mouth with their sweet, ambrosial juice.

Yoinashi Asian pear

Yoinashi Asian pear

    The skin of Chojuro, the earliest of my Asian pears, started changing from brown russet to golden yellow russet earlier this month. As a further check to ripeness, I picked a fruit and sunk my teeth into it. Delicious! They’re ripe and hang in good condition to be plucked from the branches, as needed, for a week or two, or they can be harvested in toto and refrigerated. The varieties Yoinashi and Seuri Li will follow shortly here, with Korean Giant following these two varieties next year, when it comes into bearing.
    Asian pears are as easy, perhaps even easier, to grow than European pears. They bear at a young age and heavily, often too young and too heavily, which is why it’s necessary to grit your teeth and aggressively thin the fruits. Too heavy a crop stunts young trees or spells small, less flavorful fruits on grown trees. (I devote a whole chapter to Asian pears in my book Uncommon Fruits for Every Garden.)

And Then There are Grapes

    Grapes . . . they’re easy to harvest ripe. Except that most people don’t. Color is but one indicator that a bunch wants to be harvested and eaten (that is, after all, fruits’ raison d’être). But like some other fruits — blueberries, for example — grapes turn their ripe color before they are dead ripe.

Cocord grape

Concord grape

    So I also pull off a berry or two to taste. The difference in flavor between just ripe and dead ripe is dramatic. And especially so with my bagged grapes, which can segue to the dramatic stage within their bags without threat of predation by birds and bees.
    The variety Concord presents an exception to that last statement; birds don’t like the flavor and leave the berries alone. This means the berries don’t have puncture holes that attract bees and wasps, so they also are not a problem. The deterrent in Concord grapes is the chemical methyl anthranilate, which has been formulated as a spray to keep birds at bay. My wife also doesn’t like Concord.

SOME REFLECTIONS. . . NOT THAT IT’S OVER

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Finish Squash

    “Zucchini bread is for people who don’t have compost piles.” That’s what I told Deb after she suggested, first ratatouille, and then zucchini bread, as vehicles for our excess zucchini.
    Most years I make an early, too large planting of zucchini (about 6 plants), and then, six to eight weeks later, make another sowing of only a couple of plants. The first planting puts enough zucchinis into the freezer for winter, as well as leaving enough for eating. The second planting is to yield an occasional zucchini for fresh eating through summer after plants of that initial planting have succumbed to squash vine borer, cucumber beetles, bacterial wilt, and any of the other maladies that usually do in the plants a few weeks after they begin bearing. Usually and thankfully do in the plants. But not this year.
    Almost every time I check that early planting of zucchini, a new fruit has swelled at the end of a vine now trailing beyond its bed beneath stalks of popcorn in an adjacent bed. I feel no obligation to eat zucchini, whether in zucchini bread, ratatouille, or any other concoction.

Where Are the Insects?

    In all my decades of gardening, I’ve never experienced a season with so few insect pests. A few Japanese beetles reared their ugly heads back in July; they were the only ones who showed up, except for an occasional straggler. Likewise for bean beetles. Eggplants hosted the few requisite flea beetles, but never enough for concern. (I did spray a few times with horticultural oil; judging from other gardeners’ flea beetle-less experiences this year, doubt that the effect was from the oil.)
    Cabbageworms, always requiring some late summer action on my part in the past in the form of one or two sprays of the biological insecticide Bacillus thurengiensis, have let me occupy that time with other things.
    Spotted wing drosophila, known non-affectionately as SWD, showed up, as usual, in sufficient numbers in early August to warrant a spray of spinosad, an extract from a naturally-occuring bacteria found in the soil of a defunct rum factory in the Virgin Islands. That one spray, along with some experimental traps from Cornell, was sufficient to keep the buggers from using my blueberries as nurseries in which to raise their young.
    As is so often the case with complex systems, in this case involving the vagaries of this season’s weather, the biology and the chemical and physical make-up of the soil, interactions between garden plants as well as between garden plants and weeds, timing of plantings . . .  what I’m trying to say is that I have no idea why the year was so auspicious, as far as insects.

Here Are the Diseases

    That was insects. Diseases are another story. Don’t look at my tomato plants.
    The tomato plants started the season neatly and decoratively trained as single stems up bamboo poles, soon clothing those poles in lush, green leaves and red or orange tomatoes. Now? Stems are pretty much bare from ground level up a couple of feet, with some shriveled, brown remnants of leaves dangling downwards. The disease is not fusarium or verticillium, to which so many modern tomato varieties are touted for being resistant.Diseased tomato plants
    The affliction is leaf spot disease, which is actually one or more of three diseases: early blight, septoria leaf spot, and/or late blight. The worst of the three is late blight, which makes us gardeners and farmers especially nervous after a severe outbreak ravaged a large swath of the Northeast a few years ago. Air currents and humidity have not been favorable this year for late blight to hitchhike up from the South, where it overwinters, and any that might have reached here couldn’t get footholds with this season’s hot, dry weather.
    Thorough cleanup of old leaves and stems, which house early blight and septoria leaf spot through the winter, and planting tomatoes where they haven’t been plant for the previous two years, was supposed to keep these diseases in check. Perhaps it did, but not enough.
    I have two vegetable gardens, and next year I’ll plant tomatoes in the one that housed no tomatoes for the past couple of years, putting more distance between overwintering disease spores and my plants. Clean up and distance should also quell one other disease, anthracnose, responsible for sunken, rotting areas that develop on some of the fruits.
    Diseases notwithstanding, plenty of glass jars filled either with sparkling red, canned tomatoes and dull red, dried tomatoes line shelves to bring some essence of summer into through the dark months ahead.

Pepper Heaven

    Tomatoes may be the essence of summer for their ubiquity in gardens; for me, though, ripe, red peppers more represent a summery flavor. My peppers rarely experience insect or disease problems. The challenge, this far north, is ripe, red peppers in abundance.

Italian Sweet peppers

Italian Sweet peppers

    My favorite variety for flavor, earliness, and productivity, especially this far north, is Italian Sweet. I put in many plants this past spring, and the harvest is prolific.
    Unfortunately, dried or frozen peppers offer only wan hints of the fresh peppers’ summery flavor and texture.

BACTERIA AND FUNGI, AND GRAPES, OH MY

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Upcoming Fall Fruit Workshop

See web page https://leereich.com/workshops for details.

The River Runs Green

    Crossing the bridge over the Wallkill River on my way home, I glance to my right to admire the river itself. What a beautiful color it has turned, a bright turquoise. Ponds I pass also have taken on this bright complexion, for which we can thank, or curse, organisms known as blue-green algae (heretofore referred to as BGA).
    Algae, they are not, though. BGA are bacteria known as cyanobacteria. “Algae” generally refers to eukaryotes, organisms with distinct nucleii and specialized organelles. BGA are prokaryotes, lacking such features.Green river, from cyanobacteria
    BGA can be toxic, which is good reason to curse them. Drinking or swimming in contaminated waters can cause problems to humans and other animals, including dogs, who seem to be otherwise able to drink almost any water without ill effect. The “cyan” in the name and the criminal cyanotoxins are not at all related to cyanide. The name come from “cyan,” which is the color blue-green.
    Many kinds of BGA are found throughout the world, often in extreme conditions. Not all produce cyanotoxins; some produce them only under certain conditions. Not all are even blue-green; the Red Sea gets its color from Trichodesmium erythraeum, a species of BGA. Certain conditions cause “blooms,” such as those I was admiring in the river and ponds. Here, it’s probably a combination of relatively dry conditions resulting in shallow and calm waters along with the usual influx of nutrients, mostly phosphorus and mostly from farms, septic systems, and lawns.
    BGA are photosynthetic organisms, just like plants, imbibing carbon dioxide during the day and spewing out oxygen. These primitive organisms, “in the beginning,” were important for oxygenizing the Earth’s atmosphere, thus stimulating biodiversity. We could praise them for sequestering carbon.
    Agriculturally, some cyanobacteria are important because they can convert atmospheric nitrogen into forms of nitrogen that plants can use. Although these cyanobacteria are especially important for maintaining fertility of rice paddies, they are present, to some degree, in virtually all soils. Some research even points to benefits of inoculating soils with these organisms.

Bags vs. Fungi

    So now I’m home, my head out of the soil, and admiring my grape vines. The dry weather has been almost as good for the grapes as it has been for the cyanobacteria. Dry weather minimizes grape diseases and abundant sunlight puts flavor and sweetness into the berries. With annual applications of mulch around the grapes and their far reaching roots, I never worry about my established vines being thirsty.Bagging grapes earlier in the season
    Back in early summer, we went to the trouble of affixing paper “delicatessen” bags around 100 bunches. Now is the payoff. Peeling back the paper usually reveals perfect, full, bloom-dusted bunches of especially delectable grapes. “Especially delectable” because I can let these protected bunches hang longer on the vines than unbagged bunches, which do have some disease and are prey to bees, wasps, and birds. These bagged grapes get dead ripe before being harvested.Unbagging grapes for harvest
    The bagging isn’t really all that troublesome. We just select downward hanging bunches, made easier because I train fruiting canes horizontally across a 5-wire, flat trellis, and remove any tendrils or leaves opposite the bunches. After making a slit down each side of a bag, the slitted opening is slid up the cane on either side of the bunch, the top of the bag is folded over, and then the flap stapled down on either side —  well worth the minute or so it takes from selection to finish bagging a bunch.

Grapes to Keep

    With many varieties of established grapevines, I can cut down any whose flavor is not up to snuff or that don’t produce well without having to bemoan waiting for new ones to start bearing. The “keepers” tide me over.  Variety choice is somewhat limited here because of winter cold and because cooler, damp air collects in this valley, promoting disease, abetted by inoculum from all the wild grape vines grappling high into neighboring trees along the forest edge.

Glenora and Vanessa seedless grapes

Glenora and Vanessa seedless grapes

    I’ll be doing a Henry IVth on Mars and Concord.
    Some of my current favorite varieties are Vanessa, Somerset Seedless, and Glenora, all seedless varieties. Of the three, Glenora has the best flavor, Vanessa the best texture, but they’re all very good. Some of my favorite seeded varieties are Alden, whose corpulent berries hang in large bunches, and Brianna, which isn’t quite ripe yet, but every year has rewarded us with foxy-flavored, pale green berries.
    Still to come for this season are Edelweiss, which has a rich, very foxy flavor but has not been very productive the last few years, and Brianna, with its own rich flavor not so dependent on foxiness.
    A few more years of tasting and watching will dictate whether New York Muscat, Cayuga White, Bertille Seyve 2758, Lorelei, Reliance, Swenson White, and Wapanuka keep their home here. They’re all good grapes, but why grow good grapes when I could grow great grapes from among the 5,000 or so varieties (not all adaptable here, of course)?
    (That “foxy” flavor I kept referring to is characteristic of many American grapes, and is typified by the variety Concord. No one is sure how “foxy came to describe that flavor.)

UNPERMACULTURE

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Accusations,  (Mostly) not True

I’ve understandably been accused of being a “permie,” that is, of practicing permaculture.
    (In the words of permaculture founder, Bill Mollison, “Permaculture is about designing sustainable human settlements. It is a philosophy and an approach to land use which weaves together microclimate, annual and perennial plants, animals, soils, water management, and human needs into intricately connected, productive communities.” In the words of www.dictionary.com, permaculture is “a system of cultivation intended to maintain permanent agriculture or horticulture by relying on renewable resources and a self-sustaining ecosystem.”)
    Walk around my farmden and, yes, you’ll come upon Nanking cherry bushes where forsythia bushes once lined the driveway, an American persimmon tree where a lilac bush once stood, and other edible plants used also for landscaping. In the vegetable garden, I preserve soil integrity by never tilling it, and, in the south field, blackcurrant bushes make use of the space beneath pawpaw trees. There’s the requisite mushroom yard of shiitake-inoculated logs, free-range poultry, solar panels, a rain barrel . . .

Pawpaws interplanted with blackcurrants, and a row of hardy kiwis

Pawpaws interplanted with blackcurrants, and a row of hardy kiwis

    But no! I am not a permie. My vegetables grow in beds in parallel, straight rows (rather than keyhole plantings) and, despite that commingling of blackcurrants and pawpaws, most trees, shrubs, and vines here keep to themselves. Permaculture plantings of, say, hazelnuts in tall grass and rubbing elbows with elderberries, seaberries, apples, pears, and other edibles become, over time, an unproductive management nightmare with some plants drowning out others, productivity declining due to shade, and diseases increasing from tangled stems creating dank conditions. The paltry output of such planting are best left for wildlife, who can afford to spend all day foraging for a few tidbits of food.
    My hazelnuts are grown in a mown strip that, for easy gathering, is sheared low as nuts ripen.
    Low maintenance is a goal touted by permaculturalists; understandably so. But taken to the extreme, low maintenance means not giving the grape vine the pruning it needs to be a healthy vine yielding the most flavorful berries that are easy to harvest. (One book suggests, rather than troubling with a trellis, growing grape vines up trees; the vines do so in the wild, but such fruit, in partial shade and not easily accessible, can never be high quality.)
    Much of permaculture seems to me to be not only unrealistic, but also no fun. I enjoy caring for my plants, reaping the gustatory and other rewards for a job well done. I like the challenge of researching some pest or nutritional problem and finding a solution. I like watching how plants respond to my ministrations, whether I’m wielding pruning shears, a pitchfork piled high with compost, or my winged weeder hoe.
    Agriculture is about balancing Nature’s designs and human will. Too much of the latter is a losing battle. Too much of the former leaves nothing worth harvesting.

Big Bantam, an Oymoron

    My planting of sweet corn is very un-permaculture. It’s high-culture: 6 seeds per hill dropped into compost-enriched ground maintained weed-free, timely watering with drip irrigation, hills thinned to 3 stalks per hill, even stakes to keep the stalks standing soldier straight. I mentioned, last week, how my Golden Bantam variety of sweet corn isn’t bantam at all. The stalks soar over 10 feet high.
    Was it because of my green thumb? No. I now know that it is genetics.
    This year I made four plantings of Golden Bantam. The two later plantings are, in fact, bantam-size. Looking over my seed orders, I see that I had planted Golden Bantam Corn, Original 8-row Golden Bantam Corn, and Improved Golden Bantam Corn.
    Golden Bantam is an open-pollinated variety. As with any open-pollinated variety, various strains might arise, strains which might differ in some ways from the original. With any good variety, the hope is that progeny are monitored to eliminate any off-type varieties — or to look for something that might be better than the original.

Golden Bantams compared

Golden Bantams compared

    So the name Golden Bantam could be attached to the original Golden Bantam, from 1902, or any strain, which could also have “Improved,” “Original,” etc. attached its name. (Golden Bantam was also developed into a hybrid, Golden Cross Bantam, which, like other hybrids, would be genetically more consistent and ripen in a shorter window of time.)
    On the theory that bigger is better, “Improved” was tacked onto name of the strain of my early plantings. The original Golden Bantam was 8-row; Improved Golden Bantam is 10 to 14 row. I should have read the catalog more closely because Improved Golden Bantam casts too much shade, ripens too late for my intensively planted vegetables, and yields less, with but a single ear per stalk. The original also has better flavor, to me.

Permaculture, but not by Me

    Walking down the main path of my vegetable garden yesterday, you’d come upon a very permaculturalesque planting — in the path. The path was overrun with purslane, which I didn’t even have to plant. Purslane is a tasty, very nutritious vegetable enjoyed raw or cooked. But not by me.Hoeing purslane in path
    I grabbed my winged weeder and hoed the purslane loose from the soil. As a succulent, purslane can continue to grow — and seed! — even with its roots flailing in the air. So after hoeing, I scooped the plants up to feed to the compost file.