An Early Spring

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It could be spring. Now. Indoors, with the sweet fragrance from a flowerpot of pastel colored hyacinths and other spring-flowering bulbs. All it takes is a little bit of trickery. The bulbs don’t have to wait till spring.Forced tulip bulbs

Knowing what a bulb is helps understand the trickery. But first: All that we commonly call a “bulb” is not, in fact, a bulb botanically speaking. To conjure up an image of a true bulb, picture a stem that’s been telescoped down from a couple of feet or more long to a fraction of an inch. All the leaves on that bulb also move down and closer together. The leaves, except the innermost ones, are thick and juicy, the better to store both moisture and food reserves. Near the center of the bulb is a sleeping flower bud.

Hyacinths, daffodils, and tulips are true bulbs.

Though often called a bulb, crocus is an example of a “corm.” A corm is also a short stem, in this case a short fat stem which provides storage for food reserves for winter and to fuel early spring growth.

Forcing a bulb, real or not, to flower early, indoors is, in many ways, just like forcing a cut branch of dogwood or plum to flower early, indoors. Daffodil, hyacinth, tulip, crocus, dogwood, and plum stems all enter winter with flower buds sleeping within.

All these stems of cold-climate plants are savvy enough not to start growing in the dead of winter, even after a freak warm spell. They do this by marking time, counting hours and days when temperatures are between about 30 and 45 degrees Fahrenheit, that is, cool but not frigid. Once sufficient hours have accumulated, their chilling “bank” has been filled, warmth can awaken a stem, whether its a dogwood branch or a daffodil bulb.

The first step in forcing a bulb is to get it to grow roots by planting it in a pot of soil or stones, or to suspend the bulb above water with only its base in the drink. A bulb’s roots, like the roots of other plants, grow whenever soil temperatures are above 40°F., so they can be in place and ready to support leaves and flowers when spring comes. 

In time, typically 6 to 8 weeks, which varies with the type and variety of bulb, roots will grow and the the winter chilling requirement will be satisfied. Once the chilling “bank” has been filled, growth can begin. A well-grown, spring-flowering bulb comes packed with a flowerbud-in-waiting  . . . waiting, that is, for a chilling period to break its dormancy and then sufficient warmth to allow growth. The larger the bulb, the more flowers-in-waiting.

Keeping a potted bulb cool at this point is useful for staggering flowering for multiple pots of bulbs or delaying flowering for a specific date, such as someone’s birthday. 

When ready to enjoy the flowers, don’t just bring the pot into a hot room. They would blast open and collapse. The plants, at this point, need gradually increasing warmth, and enough light to draw out a sturdy flower stalk. Forcing bulbs to blossom out of season demands a certain amount of artistry in addition to science. 

If you want flowers and want them now, and haven’t prepared bulbs ahead of time, you still have some options. Purchasing pre-chilled bulbs is one option.

The other option is to bypass the whole chilling rigamarole and force Paperwhite narcissi. These bulbs hail from perennially warm climes and will bloom without any prior chilling. All that’s needed is to pot them up and wait as long as it takes for the fragrant, white blossoms to unfold. To stagger their blooms, pot them up sequentially; lack of water keeps them dormant.

When the flower on a forced bulb has wilted and the show is over, the usual next home for the bulb is the compost pile. If the plant has been planted in soil, and if the emerging leaves can be kept growing in very bright light for many weeks, sufficient energy can be garnered keep the bulb alive through the following dormant season. Then plant the bulb outdoors this autumn and it should flower again — in a few springs hence, once it garners enough energy to also make flower buds.

Fruit in Winter!

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Snow Mulching

Only four inches of snow fell a a couple of weeks ago but I decided anyway to go outside and mulch. And shovel snow. And shovel snow and mulch.

What I was trying to do, besides clear snow from the driveway, the paths, and the doorway to the greenhouse, was to create a microclimate. A microclimate is a small area where the climate is slightly different from the general climate.

One group of plants in need of this special treatment are my maypops, Passiflora incarnata. Yes, Passiflora genus is that of passionflower, and maypop is a hardy species of passionflower, native to eastern U.S.. It bears the same breathtaking flowers, whose intricate arrangement of flower parts was used by Christian missionaries to teach native Americans about the “passion” of Christ, as the tropical species. White maypop flowerAnd, like the tropical species, flowers are followed by egg-shaped fruits filled with air and seeds around which clings a delectable gelatinous coating. You know the flavor if you’ve ever tasted Hawaiian punch.

Maypop parts ways with tropical passionflowers, which are woody vines, in being an herbaceous vine. The roots live year ‘round but the above ground portions of the plant die back each winter.

Besides creating a microclimate for the maypops, I also chose to plant them in an existing microclimate to their liking. That is on the south side of my woodshed, where the sun bears down to provide extra warmth in summer. (Another goal was to let the vines each summer cover a trellis that would give the woodshed some shade to prevent the firewood from drying out to much.) These plants of southeastern U.S. like their summers hot.

Soil moderates temperatures so never get as cold in winter as the air — or, in summer, as hot as the air. Five feet down, soils remain at a balmy 50°F year ‘round. Shallower depths are commensurately colder in winter and warmer in summer than deeper down.

Maypop is borderline hardy this far north. Insulating the ground around the plants will keep temperatures around the roots from dropping too low. Hence the snowy mulch.

As maypop grows through the summer, new flowers and then fruits appear. The longer the growing season, the more fruits the plants bear. Although I want to keep the ground from getting too cold in the depths of winter, I’d like it to warm up quickly in spring to get the plants going.

Wood chips, straw, snow, or any other mulch is going to put the brakes on soil warming, so, ideally, the mulch should be removed after the coldest part of winter is past. Except if that mulch is snow, which will melt.

Ugly but Delicious

Wandering through the snow to the other side of the farmden, I come upon another fruit, this one ready to pick and eat right now! Medlar. (Medlar and maypop each warranted a whole chapter in my book Uncommon Fruits for Every Garden.)

Medlar fruits resemble small, russeted apples (a relative), tinged dull yellow or red, with their calyx ends (across from the stems) flared open. Medlar, fruit in basketIt’s peak of popularity was in the Middle Ages. And though popular, it was made fun of for it’s appearance; Chaucer called it the “open-arse” fruit.

That old-fashioned look extends to the tree itself, which even this time of year is attractive with the elbowed contortions of its branches. In spring, the blossoms, which resemble wild roses, are borne singly at the ends of branches and, opening late so that each is cradled in already opened whorl of leaves.

But back to the fruit; its got another quirk, besides its appearance. It’s inedible when first harvested. But after the fruit has sat for a couple of weeks or more indoors, a process called bletting, the once-hard, white flesh turns to brown mush.

Medlar, after bletting

Medlar, after bletting

Yechhhh! The flavor, though, has a refreshing briskness with winy overtones, like old-fashioned applesauce laced with cinnamon.

Fruits left on the tree also blet, and my trees are loaded with fruits.

Uh oh. Although medlar is generally pest-free, I see that many of the fruits have what looks like some sort of pest damage. Instead of the smooth, brown mush, flesh of damaged fruits is drier, almost powdery. What is it?

(Almost?) Hardy Orange

More snow more recently fell, and with it came bitter cold, which made me fear for the survival of my hardy orange, Citrus trifoliata. This orange is allegedly hardy to zone 5, but still . . .

The plant is only about four feet tall and there was plenty of snow so I just started piling snow on top of it. The ends of some branches remained exposed, which is okay because they can tell me whether the plant is really hardy.

Hardy orange bears flowers and fruits very similar to sweet oranges except that hardy orange fruits are bitter and very seedy. They could be used — in moderation — for flavoring, though. Citrus, Flying DragonHardy orange fruitMostly I grow it for the novelty of an outdoor orange tree, for the sweetly fragrant blossoms, and for the decorative, green, swirling, recurved spiny stems.

Come spring, I;’ll know if just how hardy the hardy orange really is. Temperature the night after covering it dropped to minus 18° Fahrenheit.

Red and Green for Winter

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A Mexican Native Adapts to Pot

A recent snowfall draped the landscape in magic. The white blanket settled softly on every horizontal surface to create a harmony in white.

Still, I miss green. Even better than seeing some green plants would be to liven up that green with, from the opposite side of the color wheel, red. And even better still would be to have this red-and-greenery close at hand — indoors.

Three plants fill this bill well, and are easy-care houseplants.

The most obvious and common member of this clan is poinsettia. Poinsettia plantBreeding, manipulation of their greenhouse environment, and plant growth regulators have transformed this sporadically blooming native of Mexico into a compact plant bursting into large blossoms for Christmas in foil wrapped pots.

(Actually, the “blossoms” are not blossoms, but colored bracts, which are modified leaves. Peer into the whorl of bracts and you’ll see small, round, yellow cups, called cyanthiums in which inconspicuously reside the true blossoms.)

Poinsettia need not be a throwaway plant when the holiday season ends. The plant is easy to grow and, with just slightly more trouble, can be brought into bloom again this time next year. The plant is photoperiodic, meaning it blossoms after a period of exposure to short days. For poinsettia, that’s about a month of 12 hour, or less, days. That photoperiod begins about mid-September around here, so the plants could be left outdoors for the period as long as they’re not exposed to freezing temperatures. Or a plant could be moved in and out of a closet.

Although the photoperiod is spoken of in terms of length of day, length of darkness is what really matters. So each day’s dark period must be uninterrupted; no car headlights, table lamps, or even a flashlight.

If all this seems like too much trouble, just treat a poinsettia like any other houseplant. Photoperiod doesn’t stand alone in prompting flowers. Given good growing conditions, a poinsettia will still blossom — just not at Christmas.

Worth Having Even If It Does Come Late, or Early

Christmas cactus also offers red-and-greenery in winter, and is also photoperiodic. But not always. In a cool room, below 60°F., the plant will flower no matter how long each day’s light stretches. Even if it’s exposed, artificially of course, to continuous light!

Christmas cactusAbove 60°F, temperature steps in to play a role. At room temperatures, or thereabouts, a Christmas cactus needs about the same day length as does poinsettia, except that it might not need the weeks and weeks of short days before it decides to bloom. Then again, it might wait a few weeks, to throw in another wrinkle, depending on the variety of Christmas cactus.

My tack has been to give my plant reasonably good growing conditions, with bright light in winter and a little shade in summer and a well-drained potting mix rich in peat or other organic material,  and let it blossom according to its whim. In which case “holiday cactus” might be a better name for these plants than “Christmas cactus” because blossoms might unfold during Thanksgiving, Christmas, Easter, or anytime in between.

“Butterflies” in Winter

The last plant of this triad is my favorite: cyclamen. In bloom, it looks like delicate, red (or pink or white) butterflies fluttering above the mottled green, heart-shaped leaves.

Cyclamen’s native habitat — the Mediterranean, with its cool, wet winters and hot, dry summers — offers hints of the plant’s ongoing care and flowering needs. Potted cyclamen plantThis time of year, late fall going into winter, is when the plant is flowering and wants to be kept cool (preferably no higher than about 65°F.), moist (but not waterlogged), and in indirect light (which casts no more than a fuzzy shadow). Under these conditions, those butterflies can hover over the plant for weeks and weeks.

As spring comes — that is, “spring” indoors — leaves start to yellow and flowers fade. The plant is going dormant. At this point, the plant needs less water, the amount commensurate with the vibrancy of its leaves. Come fall, leafstalks start to appear again atop the bulb (botanically a corm, which is a short, swollen underground plant stem that is a storage organ), and the cycle begins again.

My favorite cyclamen species is Cyclamen hederifolium (ivy-leaved cyclamen).Hardy cyclamen in pot

Cyclamen flower in a crannied wall

Cyclamen flower in a crannied wall

It’s a very much scaled down version of the potted cyclamen you see for sale this time of year. It’s cute. Besides that, it’s also cold-hardy outdoors here. Some self-seeded “volunteers” even have established themselves to brighten up cracks between the flagstones of my terrace, blossoming each year in early fall.

Some Fruits and a Ornamental Veggie

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Happy Blueberries, Happy Me

My sixteen blueberry plants make me happy, so I make them happy. (They made me happy this year to the tune of 190 quarts of berries, half of which are in the freezer.) I don’t know how much work bearing all those berries was for them, but I just finished my annual fall ritual of lugging bag upon bag of leaves over to the berry patch to spread beneath the whole 750 square foot planted area.Blueberry fruit cluster

I don’t begin this ritual spreading until the blueberries’ leaves drop. Then, old leaves and dried up, old fruits are on the ground and get buried beneath the mulch, preventing any disease spores lurking in these fallen leaves or fruits from lofting back up into the plants next spring. Rainy, overcast summers or hot, dry summers or any weather in between — my bushes have never had any disease problems.

In past years, I did do two things before spreading that mulch. First, I spread some nitrogen fertilizer: my universal pabulum, soybean meal, at the rate of 2 pounds per hundred square feet. And second, I spread some sulfur, at about the same rate, to keep the soil acidic. After many years of mulching, the soil has built up an ample reserve of organic nitrogen — evidenced by the plants’ 2 to 4 feet of new stem growth each year. So I no longer add extra nitrogen.

With all those years of mulching, levels of decomposed and decomposing soil organic matter have greatly increased the soil’s buffering capacity for acidity. That means that I no longer have to pay such close attention to acidity, so I rarely add sulfur anymore.
Sammy also likes the mulch

Sammy also likes the mulch


Besides all these other benefit, the mulch has created a soft root run that retains moisture, just what blueberries’ thin roots really like. Fruit is borne on shoots that grew the previous season, so each year’s vigorous new growth translates into a good crop in the offing for the next year.

New York Bananas

Although the crop seemed paltry at first this year, by the time autumn came around, pawpaws were in abundance. This uncommon fruit is the northernmost member of the tropical custard apple family, and the fruit does indeed taste very tropical — a flavor mix of banana, mango, avocado, and vanilla custard — even though it’s easy to grow and native throughout much of the eastern U.S..Pawpaw, like crème brûlée

Two trees would be adequate for most households; I have about 20, just so I can learn more about them and their individual differences. That makes for a lot of pawpaws! (I test market most of them.)Row of pawpaw & black currant

Pawpaw fruits are very variable in both size and flavor even among the branches of a single tree. One year, I tried thinning the fruits to see if that would increase size of remaining fruits, as it does with apples and peaches. Pawpaw has a multiple ovary so each blossom can give rise to as many as 9 fruits. The small fruits are hard to see because they match so closely the green color of the leaves, so I didn’t thin as many as I had hoped. That said, at season’s end, fruits on thinned clusters seemed no larger than fruits on unthinned clusters.

Beginning around the middle of September, I began harvesting the first fruits. I picked some up from the ground and picked some softening ones from the trees, all of which continued through October. By putting them immediately in a cooler at 40°F, I still had good fruit into the middle of November.

Scarlet Runners

Every year I fear that at season’s end I’ll remember something I forgot to plant. This year it was scarlet runner beans.Scarlet runner bean flower

Despite the “bean” in the name, I’ve grown this vining bean, as do most people, primarily as an ornamental, for its scarlet blossoms. I occasionally eat the fat, hairy, yet delectable green beans.

Every year I collect some of the matured black and pale purple, calico seeds for replanting the following year. One year, I decided to cook up some of these seeds and taste them. Scarlet runner bean seeds are quite tasty (and, I learned prior to eating, nonpoisonous). Scarlet runner beans
 
Next year I’ll remember the scarlet runners. My yard will be aflame in scarlet flowers and, because the plant is pest-free  —  even to Mexican bean beetles — I expect to reap a bumper crop of beans.

Some Good, Some Bad

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Picking Pecks and Pecks of Peppers

Warm — no, hot — weather going on and on keeps tomatoes, cucumbers, and peppers chugging along, restrained only by diminished sunshine. Still, before real autumn weather rolls in and decimates these warmth-loving plants, it’s time to do some evaluation of this season before it fades into memories that meld with previous seasons.

As usual, there are successes and failures. Good — no, great — are this year’s peppers. I credit the rousing success mostly to My choice of two varieties. The first was an old variety, Sweet Italia, aka Sweet Italian or Italian Sweet. Other varieties are available with similar names; the names are similar, but not the same, as are the fruits.

Sweet Italia has two problems: The seed is hard to find; and the plants flop over under their weight of fruit. Both problems are easily solved: Save seed (Sweet Italia is not a hybrid, so seeds come “true” as long as the plants are sufficiently distant from other pepper varieties); stake the plants. Sweet Italia is especially notable for bearing large and relatively early crops of deliciously sweet red peppers even under northern growing conditions. It’s much, much tastier than Sweet Ace, which is often grown commercially as an early ripening, sweet red pepper.Italia, Escamillo pepper

The other pepper variety of note is Escamillo, larger than Sweet Italia and also delicious, in a different way. Escamillo, bred by Johnny’s Selected Seeds, ripens yellow. Like Sweet Italia, Escamillo is a corno di toro, shaped like the horn of a bull.

Blight!!

Balancing my peppery successes are two failures celery and celeriac. Plants looked healthy from the time I sowed seed, indoors in February, until the transplants went out in the garden, in early May. It was downhill from there.

Plants are stunted and their leaves are spotted by disease. The spots are very distinctive, tan with black edges, and angular in outline. The tan areas lacked pycnidia, small, black propagules visible with the naked eye, so the disease is not one of the fungal diseases that afflict celery and celeriac.Celery bacterial blight

A web search of symptoms and images identified the problem as bacterial blight (Pseudomonas syringae pv. apii). Cool, wet weather exacerbates the condition, and we did have some of that this summer. The fungus can also spend the winter in the soil, which makes a good case for crop rotation, not planting any member of a family of plants in the same place oftener that every 3 years. I did move my celery and celeriac far from previous two locations, though.

I’m pinning the blame on seedling flats that were not sufficiently cleaned. Usually, I just give them a rinse after use; next year they’ll also get a spritzing with alcohol. 

Infected seed could also have been the culprit — doubtfully in my garden. The celeriac seed was from a reputable nursery. What’s more, the celery seed comes from my own plants, in the greenhouse. Those plants also self-seed in the greenhouse, and the volunteer plants that come up in the greenhouse look fine. (I thin them out, letting the best ones grow to provide celery all winter, and then self-seed again in spring.)

If infected, seed could be de-contaminated with a hot water treatment, 122°F for 25 minutes. Or with time. Seeds more than two years old don’t carry disease.

Other plans for next year are to be even more thorough with end-of-season cleanup of beds and to rip out of the ground any plants suspected of harboring disease as soon as noticed.

As a last resort, copper sprays, which are approved for organic use, could be applied. I probably won’t do that; it takes the fun out of just popping fresh vegetables into your mouth in among the beds. I have plenty of other good stuff to eat out there.

A Fruitful Season

In fruits, pears have been outstanding this year. Not because of any greenness of my thumb; everybody around here had good crops of pears. Must be something about the weather.

Also outstanding have been grapes. Again, not because of the greenness of my thumb, but because I have so many vines and so many different varieties. Despite weather conducive to diseases, there were — and still are — plenty of good grapes for eating.

Flowers did fine this year, except Lemon Gem marigolds, one flower that I try each year to sow enough of to define the leading edges of the beds in the vegetable garden.Lemon Gem in path They typically germinate poorly for me, but they occasionally self-seed. I couldn’t bear to remove the few that popped up in the main path near the leading edges of the beds. Their general absence makes those few all the more outstanding.

The Destroyer To The Rescue

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Predatory Helpers

Some of the figs — the varieties Rabbi Samuel, Brown Turkey, and San Piero — started ripening last week. With their ripening, I am now in a position to claim victory over the mealybugs that have invaded my greenhouse fig-dom for the past few years.
Mealybugs look, unassumingly, like tiny tufts of white cotton, but beneath their benign exteriors are hungry insect. They injects their needle-like probiscis into stems, fruits, and leaves, and suck life from the plants, or at least, weaken the plants and make the fruits hardly edible.

Over the years I’ve battled the mealybugs at close quarters. I’ve scrubbed down the dormant plants with a tooth brush dipped in alcohol (after the plants were pruned heavily for winter). I’ve tried repeated sprays with horticultural oil. I put sticky bands around the trunks to slow traffic of ants, which “farm” the mealybugs. And I’ve rubbed them to death with my fingers when I came across them on the stems. All to no avail. The mealybugs always made serious inroads into the harvest.

Mealybugs finally have been quelled this season thanks to another insect, the aptly named “mealybug destroyer” (Cryptolaemus montrouzieri), available from www.insectary.com. To soldier along with the mealybug destroyer, I also ordered some green lacewing (Chrysoperla rufilabris) eggs. Besides attacking the mealybugs, the lacewings prey on aphids, seizing the aphids in their large jaws, injecting a paralyzing venom into them, and then sucking out their body fluids. With good reason, lacewings are also called aphid lions.

Mealybug destroyer

Mealybug destroyer

I ordered the first batch of predators in early summer. After recently noticing a buildup of mealybugs again, I ordered another batch. The mealybug destroyer and aphid lion populations may have plummeted after they ate all the bad guys, or they may have found their way to greener pastures via the many openings in the greenhouse.

The smallest amount of either pest that could be purchased could have policed a greenhouse much larger than mine, so the predators were relatively expensive: about $80 per shipment, with shipping. Still, I estimate the potential ripening of about 160 figs, which brings their cost to $1 per fig. Not bad for a dead ripe, juicy, ambrosial fruit that, with each bite, transports me back thousands of years to the Fertile Crescent, where figs originated.

Help From The Queen

A visitor to my greenhouse might have thought it looked weedy this summer. Tall flower stalks of Queen Anne’s lace grew with abandon, cilantro flowered and then their seed heads flopped down willy nilly, lettuce grew bitter as the plants bolted, and mustard greens shot up stalks capped with yellow flowers. There was reason for this wild wantonness.
The purpose of all these flowers was to encourage the adult mealybug destroyers and aphid lions to stick around. Flowers of plants in the Carrot Family, such as Queen Ann’s Lace and cilantro, the Daisy Family, such as lettuce, and the Mustard Family, such as, of course, mustard, provide nectar and pollen that the predators enjoy.Queen anne's laceThe Carrot Family Helps Out

I also encouraged beneficial insects outdoors, in my vegetable gardens, by growing or, at least, letting grow, some of these same plants.

Add to that list dill, another member of the Carrot Family, which I always let flower and set seed in the garden. Those seeds become next year’s dill plants with no extra effort on my part except to weed out excess self-sown seedlings.

For some reason, dill did not self-seed in the garden the past two years, so this year I bought and planted seed. “Planted” might be too specialized a term for what I did. In fact, I just tore open the packet of seeds, poured them into my hand, and waved my hand as I let the seeds fly. Like magic, seeds sprouted a few weeks later.
This season’s dill not only encouraged beneficial insects and provided some ferny leaves and seed heads for flavoring, but also provided beauty. The variety was ‘Fernleaf,’ which grows dwarf, compact plants that also are slower to make flower heads. Perhaps it was the compactness of the flat heads of greenish yellow flowers or the denser backdrop of green leaves, but the plants captured my attention every time I walked by them. Still do, because they’re still blooming.Fernleaf dill

Queen Anne’s Lace also appeared in my garden with no extra effort on my part. Not only from self-seeding, as a weed. But also from an occasional rogue carrot seed from those I planted. Queen Anne’s Lace and carrot are the same genus and species, carrots having been selected and bred to make fatter, juicier, tastier, and orange-er (or, these days, purple-er) roots.

Here, at least, this season was particularly welcoming of QueenAnne’s Lace. The meadow next to the vegetable gardens has been dotted white with an abundance of their flowering heads.

Making Sense

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Lilies, More Than Just Pretty

I’m triply thankful for the lily stems in the vase in the kitchen.

First, for their beauty. The large, lily-white (of course) petals flare out into trumpets, from whose frilly throats poke groups of rust-red anthers and single tear-capped stigmas. The petals spread about 8 inches wide from one side to the other, and the single stalk I plunked into the vase sports six of them!Lilies in vase

Second, I’m thankful for the lilies’ fragrance. The heady, sweet fragrance fills the whole room.

And third, I’m thankful that the plants, cut from outdoors where they share a bed with staked Sungold tomato plants, are alive. They’ve been threatened by a relatively new pest, the lily leaf beetle (Lilioceris lilii). This European pest made its North American debut in Montreal in 1945, and its debut on my farmden in 2015.

Lily leaf beetle can be controlled by sprays, even organic ones such as Neem or spinosad. But I’m not keen on spraying anything on plants rubbing elbows with edibles, in this case my Sungold tomatoes.
The beetles’ bright red color makes them easy to spot, at which point they can be crushed. Battling the beetle mano a mano is a viable control for a backyard planting. This was my approach a couple years ago. With other garden distractions and many crown imperial (Fritillaria) plants, which also are attacked by the beetle, I abandoned any efforts to control the beetle.

Yes, I saw some beetles on the lilies this season; yes, the plants are still doing well. Plants can tolerate a certain amount of pest damage and still do fine.

Play It Again Sam

My awesome lilies aren’t just any old lilies. They’re true lilies (Lilium species), not daylilies (Hemerocallis species). Once we’ve narrowed down “lily” to the genus Lilium, there are about 100 species within that genus from which to choose.

My lily is one of many varieties of Asiatic hybrid lilies. Its name: Casa Blanca. I highly recommend growing it.

Casablanca lily in the garden

Casablanca lily in the garden

Popeye’s Delight, Later

With eyes and nose taken care of, let’s move on to another of the senses, taste. I’d like some spinach. But I can’t have it — yet. I can plant it very soon, though, and then in a month or so I can be eating it.

So why didn’t I plant it a month ago so I could be eating it now? The reason is that spinach is a long day plant, which flowers (aka “goes to seed”) during summer’s long days. Planted a month ago, even two months ago, and after making a rosette of a few leaves the plant would pump its energy into flowers and seeds. Besides yielding a paltry harvest of leaves, that whole “going to seed” thing also ruins the flavor of the leaves.

Actually, it isn’t long days that make spinach gustatorily morph from Dr. Jekyll to Mr. Hyde; it’s short nights. (Photoperiodism, the name for this response, was originally though to be the response to daylength; calling it a response to “daylength” stuck even after it was discovered that the response was to the length of the the night.) Beets, gladiolas, lettuce, and radishes are also “long day plants.”

Photoperiod doesn’t work alone in prodding plants to grow or flower. Temperature, either before germination or while the plants are growing, also figures in, as does light intensity and soil moisture. Spinach usually flowers when days are 14 or more hours long (more correctly, short nights that are 10 or less hours long), but will also do so following 8 hour days (16 hour nights) if the seeds are chilled.

Nights are now just over 10 hours long so I can plant spinach. While the plants are growing, cooler temperatures, which are coming this way, and adequate water, which my plants will get thanks to drip irrigation, also factor in to keep spinach from going to seed. So the spinach that I sow today will put all its energy into growing large and tasty leaves.

Peas, Please

A taste of peas would also be nice. The spring harvest was good. Still, some gardeners successfully plant peas in summer for an autumn harvest. Not me.Peas in pod

Daylength isn’t what messes up late sown peas, for me, at least. Heat is. Peas languish during hot weather, common through August and even lingering into early autumn. So the peas grow poorly, and if they do weather the hot weather, they are apt to be struck down by the first frost of autumn.

I’ve heard that Wando is a pea variety that can take some heat. I haven’t tried for an autumn harvest for many, many years. With climate change, perhaps autumn peas are worth another try.

A Cardinal And A Jewel

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And This Year’s Winner Is . . .

Organizations annually tout their “plant of the year.” There’s the Perennial Plant Association’s 2017 plant of the year butterfly weed (Asclepias tuberosa); Proven Winners 2017 Landscape Plant of the Year is Yuki Cherry Blossom Deutzia; American Conifer Society Collectors’ Conifer of the Year is Primo Eastern Arborvitae (Thuja occidentalis ‘IslPrim’); Assembly magazine’s 2016 Plant of the Year is Bosch Rexroth . . . whoops, the last is an assembly plant (hydraulic motors and pumps). Anyway, you get the picture.

How about a new category, the Weed of the Year? Here on my farmden, I nominate and elect jewelweed (Impatiens capensis). This weed is all over the place this year, even far from where it’s been in the past. For this weed, being all over the place is its only flaw.

On the positive side, jewelweed is a pretty plant with very succulent stems sporting orange, sometimes yellow flowers. jewelweed blossomIt’s also been called touch-me-not for the way its seed capsules burst open with the slightest touch to project their seeds many feet — a useful characteristic for helping a weed spread although it doesn’t explain jewelweed’s spreading here in one season over a hundred feet and to the other side of my house. It’s close relative, the widely planted annual flower, impatiens, does the same thing without becoming weedy; both plants also enjoy and flower in either sun or deep shade.

Jewelweed often grows as a neighbor to poison ivy, which perhaps by some odd reasoning (to me) gave it a reputation for use as a treatment for poison ivy. My friend Bob, usually a clear thinker and very susceptible to poison ivy, decided to treat his rash, one year with jewelweed. He reported a success, as an afterthought mentioning that he applied it in conjunction with cortisone. (I’ll expect a lot of feedback, testimonials for jewelweed.)

Jewelweed’s main asset is how easy it is to remove. Even large stalks lift easily out of the ground, roots intact, with minimal soil disturbance. A machete or scythe slices easily through the stalks without the slightest resistance to decapitate the plants.

Each year in the garden is different. Jewelweed’s plans for next year won’t be evident until next June.

Red In The Shade!

Cardinal flower I planted

Cardinal flower I planted

Slicing through a stand of jewelweed with my scythe in the deep shade along the seasonal, small stream (a ditch) in front of my property, I was taken aback by a 3-foot-high spike of fire engine red flowers. More scything, and then another spike appeared. I thought back to spring, and remembered planting cardinal flower (Lobelia cardinalis) along the stream/ditch this past spring.

Cardinal flower never ceases to take my breath away. Deep shade is not usually home to lots of showy flowers, and especially not flowers in traffic stopping colors. Only a few times in my life have I come upon cardinal flowers in the wild, and — you guessed it — each time they took my breath away.

Wild cardinal flower

Wild cardinal flower

Each time they were also in deep shade alongside water. Hence my choice of site for last spring’s planting.

Cardinal flowers are easily grown from seed, and no need to have a lot of them for bold effect. The plant to grow is the species, not one of the “improved” varieties. Many varieties have been bred or selected, including Alba (white flowers), Heather Pink, Angel Song (salmon and cream flowers), Ruby Slippers, and Twilight Zone (pink flowers). Color of the straight species is usually red, a very pure red, untainted by a hint of blue as are so many other red flowers.

Two Weeds(?)

Jewelweed and cardinal flower have much in common: both are native, both grow in shade, and both are pretty plants. Jewelweed is a self-seeding annual.

Cardinal flower is a perennial, unfortunately a short-lived perennial. It does self-seed to some degree for new plants to replace dead ones, but not enough for my needs. I grew my originals from seed, which is not at all difficult, and intend to do so again. If only cardinal flower could learn some reproductive habits from its neighbor in the shade.

BLACKCAPS AND PRUNING

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Blackcaps All Season (Almost)

It’s a bumper year for blackcaps (also know as black raspberries or, botanically, Rubus occidentalis), at least here on the farmden. Up to last year, we harvested wild blackcaps from plants that pop up at the edges of woods. The current bountiful harvest is from blackcaps that I planted a couple of years ago. Last year’s harvest was unimpressive because the plants were still settling into their new home.Black raspberry fruit

Most blackcaps, like many other bramble fruits, have biennial canes that grow stems and leaves their first year, fruit in early summer of their second year, then die back to the ground. (Annual harvests are possible because while those second year canes are fruiting and then dying, the perennial roots are pushing up new canes, which will bear the following year.)

Niwot and Ohio’s Treasure, the two varieties I planted, stand out from the crowd in bearing on new, growing canes as well as on two-year-old canes. Their two-year-old canes, like those of run-of-the-mill blackcaps, bear now, in early summer. Berries are borne on new, growing canes towards the end of the growing season, until stopped by cold. The next season’s summer crop is borne lower down on those same canes. The upshot of all this is that I get to eat fresh blackcaps in early summer and then again in late summer.

I knew I could expect two crops each season from these varieties when I planted them. That’s why I planted them. What I didn’t know is how abundant and flavorful the berries would be. Unfortunately, for the purposes of evaluation, the two varieties are growing in separate locations that differ markedly from each other. The one in the better location — a humus-rich soil basking in abundant sunlight — yields oodles of large berries. The other variety — planted in a weedy bed shaded from the east by a greenhouse wall — yields less and smaller berries, with perhaps a tad better flavor.

Pruning Recipes

Pruning Niwot and Ohio’s Treasure is as important for ease of picking and pest control as it is for other brambles. And it’s easy.

Right after the current crop grinds to a halt, I’ll cut every cane that bore fruit right to the ground. These two-year-old canes are going to be starting to die anyway. I could cut them down in winter, but cutting them sooner gets the thorny canes out of the way of late summer harvest.Blackcaps on plant

All summer long, I’ll also pinch out the growing tip of any new canes when they reach about four feet in height. Pinching induces side shoots, on which fruits are borne.

That’s it for summer pruning. Sometime next winter I’ll reduce each clump of canes to the six healthiest and shorten each side shoot on remaining canes to about 18 inches long.

All in all, Niwot and Ohio’s Treasure yield a lot of delicious fruit over a long period of time for minimal effort. Now, if only the canes were thornless.

And More Pruning

Whoa, I can’t yet put away the pruning shears. I need the shears for some rose bushes. With the rose “crop” subsided, pruning will get varieties that bear only in June ready for next season, and those that bear again and again through summer to bear again and again.

For roses that bear only once each season, such as the heavenly scented Rose D’Ipsahan, or the cheery, lemon-colored blossoming Father Hugo’s Rose, I cut back some very old stems right to or near ground level, and shorten the remaining stems, some by a quarter of their length, others by three quarters of their length. Then I go over the bush to thin out any crowded stems. This pruning makes room for and stimulates growth of new shoots with ample time for them to initiate flower buds this summer that will unfold next spring.

Repeat blooming roses get pruned differently. The goal is to cut off stems with spent flowers and coax new growth that will flower this season. Instructions for pruning hybrid tea roses are very specific; and I quote: “. . . . cut the stem back to a five-leaflet leaf. Retain at least two five-leaflet leaves on each shoot.”

I don’t grow hybrid teas, which generally are finicky roses, preferring tougher roses such as some of the David Austin varieties, such as L. D. Braithewaite

Braithewaite rose

Braithewaite rose

and Charlotte. Pruning is very simple. I just lop stems or groups of stems laden with spent blossoms as far back as I feel like to keep the shrubs from growing too large. They both get another pruning in late winter.
Rugosa rose blossomAnother rose I grow, rugosa rose, won’t get any pruning this summer. Besides its nonstop, fragrant flowers, rugosa rose also bears nice hips, that is, fruits. The hips make excellent jam and are rich in vitamin C. Pruning in summer would remove spent flowers which then couldn’t go on to swell into fat hips.Rugosa rose hips

AWESOME BLOSSOMS & RATIONALITY

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Wow!!

With blossoms spent on forsythias, lilacs, fruit trees, and clove currants, spring’s flamboyant flower show had subsided – or so I thought. Pulling into my driveway, I was pleasantly startled by the profusion of orchid-like blossoms on the Chinese yellowhorn tree (Xanthoceras sorbifolium). And I again let out an audible “Wow” as I stepped onto my terrace, when three fat, red blossoms, each the size of a dinner plate, stared back at me from my tree peony.

Tree peony blossoms

Both plants originate in Asia. Both plants are easy to grow. Both plants have an unfortunate short bloom period, more or less depending on the weather. Fortunately, both plants also are attractive, though more sedately, even after their blossoms fade.

The tree peonies have such a weird growth habit. I had read that they were very slow to grow so was quite pleased, years ago, when each of the branches on my new plant extended its reach more than a foot by the end of its first growing season. Tree peony is a small shrub; at that rate mine would be full size within a very few years. Or so I imagined.

The tree peony still grows that much every year. But every year many stems also die back about a foot, more following cold winters. No matter, though, because every May giant silky, red flowers unfold from the remaining fat buds along the stem.Yellowhorn blossoms

I originally planted Chinese yellowhorn not for its flowers but for the fruits that follow the flowers. Each fruit is a dry capsule that later in summer starts to split open to reveal within a clutch of shiny, brown, macadamia-sized nuts. Yellowhorn frequently makes it onto permaculture plant lists, with the edible nuts billed as having macadamia-like flavor also. Not true. I’ve tried them raw and roasted. Roasting does change the flavor, but raw or roasted, the flavor is bad.Yellowhorn tree

Still, those blossoms make yellowhorn well worth growing. And after the blossoms fade, this small tree is adorned with shiny, lacy leaves. Much like the tree peony, yellowhorn grows many new stems each year, and many of the stems die back, not necessarily from winter cold but because they’re seemingly deciduous. I tidied the tree up last week by pruning off all the dead stems.

Out With You-All

Today, May 25th, with temperatures around 90 degrees F., I may not be able to restrain myself. It’s hard to imagine that temperatures could still plummet below freezing at least one night sometime in the next week or so. I’ve already ignored that “should” and a few days ago moved houseplants outdoors.

Why the rush? First of all, houseplants enjoy growing outdoors more than growing indoors. Outside, breezes rustling leaves and stems make for stronger, stockier growth and rain showering the leaves washes off a winter’s accumulation of dirt and grime.

After a winter indoors, the plants do need to acclimate to these conditions, which is why they start their outdoor vacation on the terrace on the north side of the house, which blocks wind and, for part of the day, sunlight.

I also urged the plants outdoors because populations of aphid and scale insects were outgrowing the appetites of the ladybugs crawling up and down the stems. Outside, natural predators keep pests in check and, if necessary, I can spritz the plants down to knock off pests and spray soap or summer oil to kill them without worrying about getting spray or oil on windows, walls, or furniture.

The Rush On Sweet CornCorn planting

Even tender seeds, such as corn, squash , and beans, can be sown now. The earth has warmed enough for decent germination, and by the time the plants are up, warm weather will have settled in for the season.

Tomorrow I plant sweet corn. Kinky as it sounds, I’m anxious to sink my teeth into a freshly picked ear.

Upcoming Workshop

June 24, 1-4:30 pm, DRIP IRRIGATION WORKSHOP at the garden of Margaret Roach in Copake Falls, NY. Don’t wait for dry weather to learn about this easy and better (for you and plants) way to water, including participation in hands-on installation. For more information and registration, www.leereich.com/workshops.