TASTING AND TIDYING, OR NOT

Fruit Heaven

Hudson's Golden Gem apple

Hudson’s Golden Gem apple

I remember a few years ago of having a most fruitful — and I mean this very literally — experience visiting one of the USDA’s germplasm repositories. “Germplasm repository” doesn’t sound like the kind of place anyone would want to be, but these USDA repositories are, in fact, sunny, colorful places, often redolent with enticing aromas. In the case of the one I visited, the aroma was of ripening apples.

Germplasm is the stuff that gives rise to an organism, and the USDA has set up repositories around the country to house various kinds of plants. Each repository is situated where a particular group of plants grows well. So Davis, California is home to the repository for figs, pomegranates, and Asian persimmons; Corvallis, Oregon is the repository for pears, gooseberries, and mint; and Geneva, New York, where I visited, houses the collections of apples and American-type grapes. (My own gooseberry collection helped build the gooseberry collection at Corvallis about 30 years ago.)

Taking into account seed collections and other, related work, these repositories maintain over 20,000 accessions of plants representing over 300 species. Germplasm from these collections is available to scientist and other interested citizens, which is how I obtained grafting wood to make most of the rare varieties of apples and pears that I grow.

So there I was — a fruitophile — standing with clipboard in hand and camera in pocket in in a field of apple trees, each one a different variety. My mission: Photograph and collect 3 to 4 samples of a couple of dozen varieties. What sweet labor! (I had previously contacted the repository staff and received permission).

Up and down the rows I went, photographing, collecting, and, of course, tasting. Apples have been cultivated for so long and are so popular a fruit that it’s no wonder that such great variation exists in the fruits’ appearances and flavors. Flavors include anise-flavored Ellison’s Orange, sweet Mollie’s Delicious, spicy-tart Cox’s Orange Pippin, and everything in between and beyond. The range in color goes from gray-brown Pomme Grise to cheery red-splashed yellow King of the Pippin. And then there are variations in fruit size and shape and, less obvious, characteristics such as pest resistance, productivity, and cold tolerance.

Ashmead's Kernel apple

Ashmead’s Kernel apple

Most important, to me, is flavor. I should have brought a palate cleanser because after a while all the varieties were beginning to taste like . . . well . . . apples. Nonetheless, two varieties that I did not grow did stand out for flavor; I ordered grafting wood of Hudson’s Golden Gem and Pitmaston Pineapple to graft onto trunks of my Ingrid Marie trees once I lop their tops off.

After the apples, there were grapes to photograph and sample.

Tidy Not

Boy, would I love to tidy things up with some pruning now. The Golden Celebration rose bush would look nicer in coming months with those couple of tall, gawky stems cut off or back.
Golden Celebration rose
Grape and hardy kiwi stems are reaching out all over the place, grabbing onto each other and anything else they can wrap around.
Kiwi vines
The pear trees have a nice spreading form — except for watersprouts shooting vigorously skyward from the uppersides of some of the spreading branches. How nice it would be to cut these plants back now rather than in spring.

But I’m going to restrain myself from doing any pruning. As stated in The Pruning Book (by me!), “Although immediate regrowth rarely occurs after late summer or autumn pruning, cells right at the cut are stirred into activity to close off the wound. Active cells are liable to be injured by cold weather, which is a reason to avoid pruning in late summer or autumn except in climates with mild winters or with plants that are very hardy to cold.”

Gooseberries and currants are super cold hardy plants and begin growth relatively early in spring. All of which makes a good case for pruning those plants now.

And a Case for Not Tidying

Rather than prune, a good place to re-channel that “tidy everything up” urge is in the vegetable and flower garden.

Cleaning up is one way to lessen pest problems next year. As I pulled out spent bush bean plants, I gingerly placed them into the garden cart and, from there, onto the compost pile, trying not to disturb the resident bean beetles. Those bean beetles had hoped to spend the winter on site, to emerge next spring and lay eggs on next year’s bean plants. I’m hoping to “cook” as many of them as possible in the compost pile.

Tomato plants are looking a bit ragged even though they’re still bearing some tomatoes for fresh eating. Gathering up all stems, leaves, and old fruits and composting them reduces the inoculum load of diseases such as early blight and septoria leaf spot. Left in place, they would spend winter out in the garden ready to infect next year’s plants. It’s not a question of eradication, which isn’t possible, but of balance.
Tidy vegetable garden beds
Cutting down old peony stems and composting them takes inoculum for next years botrytis disease off-site. Left to infect plants next spring, botrytis could keep peony flower buds from unraveling.

As Charles Dudley Warner wrote over a hundred years ago (in My Summer in the Garden, which I highly recommend and is much more than a gardening book), “the closing scenes are not necessarily funereal . . . a garden . . . goes into winter-quarters . . . neat and trim . . . so that its last days shall not present a scene of melancholy ruin and decay.”

Video of Lee on “Growing a Greener World”

https://www.growingagreenerworld.com/episode-1007-gardening-with-the-masters-growing-unusual-fruit-with-lee-reich/?fbclid=IwAR38OASi5mi1JaezpeQ9aImCByAIvnkTFfGSdL0Z7zQIcSkGOBE8OZg_VAA

Battle for Figs: Victory

Some History

I don’t know the score over the years, but this year’s victory is mine. The battles have been with scale insects, both armored scales and their cousins, mealybugs (but rarely both in the same year), on my greenhouse fig plants.
Eating a fig
Those fig plants are planted in the ground in a minimally heated greenhouse, where winter temperatures can sink to about 35°F. The oldest of these plants have trunks 8 inches in diameter. They thrived for years without any pest problems, scale of otherwise. A few years ago, the insects made their appearance, sometimes ruining almost the whole crop.
Mealybug
Over the years I fought them in various ways. One year it was spraying the dormant plants with alcohol. Another year it was, more aggressively, scrubbing trunks and stems of dormant plants with a toothbrush dipped in alcohol. Ants herd and protect scale insects, so another year I fenced the ants off the plants with a band of masking tape coated with forever (almost) sticky Tangletrap around the trunk of each plant.

An expensive but short-lived success was the two releases of the predatory ladybird beetle Cryptolaemus montrouzieri and the parasitoid wasp Anagyrus pseudococci.

Mealybug destroyer

Mealybug destroyer

These biocontrol helpers ended up valuing each fig at about a dollar, still worth it. I screened all openings in the greenhouse, hoping to perennialize them inside. (It was not effective.)

Battle Plan, Done

So this year I tried a multipronged approach.

The biggest change was, rather than growing the figs as bushy trees, training them as espaliers. Espalier is the training of plants to an orderly, usually two-dimensional form both for beauty and, in the case of fruit plants, for good production of high quality fruit. For my figs, an additional benefit would be that each plant would only have one point of contact — its trunk — with the ground. IA band of masking tape coated with Tangletrap would be a roadblock on the ant highway. (Plus the look of the plants always elicits a “Wow” from visitors.)
Rabbi Samuel fig, espaliered in greenhouse
The fig plant growing near the greenhouse endwall has a short trunk that, after rising to about 18 inches from ground level, bifurcates into two, self-supporting horizontal arms extending parallel to the wall in opposite directions. At the head of each of the south beds, a fig tree is planted each of whose trunk is terminated by just a single, self-supporting, horizontal arm reaching down the bed to the sidewall. With just a trunk and one or two arms, thoroughly scrubbing down the dormant plant with alcohol is a relatively quick job. Quick enough to prevent 2 or 3 scrubbing before plants resume growth in early spring from becoming tedious.

Another nice feature of this training system is that pruning the plants at the end of the season is a no-brainer. Vertical shoots that rise up from the horizontal arms are thinned to keep neighboring shoots 8 inches apart and helped along in their vertical growth by being trained to pieces of bamboo attached to the greenhouse roof. (Yes, an ant could walk up the wall and across the roof of the greenhouse and then down the bamboo to get at the plants but they are either not that smart or energetic; it hasn’t happened.)
San Piero fig
A little later in the early part of the greenhouse growing season I gave the plants some dowsings with neem oil. I’m not sure how effective the neem component is but “horticultural oil” itself is effective in fighting off scale insects.

A ring of cinnamon around the base of each plant provided further disincentive to the ants, who will not cross a cinnamon line. The cinnamon and the Tangletrap did need renewal once per season.

As new fig shoots soared skyward near the greenhouse roof, I used a pole pruner to prune out the top of the growing shoot. Side branches, of course, then grew, and I periodically had to to hack them back also.

Uh Oh, But All Still Good

Everything was copacetic and we were harvesting figs, which formed along the vertical stems at the juncture of almost every leaf. Then, in late August I noticed some mealybugs on one plant. Time for Cryptolaemus montrouzieri again. I released them in early September and we were back in business, harvesting large handfuls of three different varieties of delciously sweet figs — San Piero, Brown Turkey, and Rabbi Samuel — daily.

And then, just today, I noticed armored scales on the plants, and a few ants! I’m not sure how the ants are getting onto the plants, but one possible “benefit” of the armored scales is hardly any mealybugs. Perhaps they can’t coexist.
Fig scale
All the measures I took against mealybugs should also be effective against the armored scales, except for the Cryptolaemus montrouzieri. Their predator Aphytis melinus, also known as the Golden Chalcid, has been effective against armored scales.

I’m not taking action. With less sunlight and cooler temperatures the figs trees have slowed down, running out of new stems on which to hang fruit. No matter; it’s been a good season of fresh figs.