Results of Extended Cold Spell

Sunny, cold days have been the norm in Seattle for a number of weeks, which is “unseasonal” for us here in the Maritime Northwest. And it’s having a punishing effect on my overwintering edibles.

Starting with a snowstorm the second week of December, we’ve had what I’d call a hard winter, as “hard” relates to frost and freeze, that is. Many nights in the low 20s or even teens, and days when the thermometer barely tops 32. Freezing.

The effect has been mixed, according to today’s survey, done in balmy 42-degree sunshine. I opened the zippered front of the long plastic cloche, expecting to find slimy messes where my lettuce and radicchio starts were living, along with a seeded bed of mustard greens. Across the path, floating row cover blanketed a bed seeded with corn salad (mache). All had been alive after that December snowstorm, but I hadn’t uncovered these areas in weeks. Here is my delightful find:

salad cloche

Mustard greens have sprouted in the first bay of the cloche, and in the back two, Winter Density lettuce and Palla Rossa radicchio are standing tall. To the right of the path is thickly sown Vit corn salad.

You’re looking at Winter Density lettuce and Palla Rossa radicchio under the cloche, and Vit corn salad sprouted densely on the right, where the corner of the floating row cover has been removed. Definitely winners in a harsh environment. The existing leaves probably wouldn’t be desirable, but they provide a good base for new growth, which will find its way into late winter salads.

The cloche, which doesn’t look like it would provide much protection, is also a winner. It’s sitting on a raised bed made of stone, which helps radiate heat back into the bed, and I’ve placed stones in bare spots within the cloche to add to that effect.

However, a trek to the back 40 brought down my mood a bit. The purple sprouting broccoli has been shivering with just a smattering of straw mulch around its stems. It had bounced back after the snow melted in mid-December, but since then it’s been in severe retreat due to the cold nights. I should have covered it, but went away for Christmas, when the first cold nights really set in, and by the time I returned I figured it was too late. The cold has continued, with a brief letup, and I hope for the best. But here’s what it looks like right now:

PS Broccoli

“PS” might stand for pretty sad instead of purple sprouting in this bed of broccoli, but who knows, it may recover. Stay tuned as the weather warms.

Behind the broccoli, though, are two A-frame cloches, one covering carrots and the other beets. Although the edges of the cloches are frozen into the crusty soil, I can see green leaves through both of them, giving me hope that these two root crops are hanging in there.

beet and carrot cloches

I haven’t opened these cloches yet – their edges are frozen into the soil – but the beets (left) and carrots (right) still have good greenery.

Speaking of the crusty ground, it needs to be pried open like a stuck car-door in order to rescue a parsnip or two. But it’s worth the effort, as those roots have been nice and sweet.

Other above-ground plants have not fared well. A bed of parsley in an open cold frame is matted against the soil, although might recover. Slimy mounds that once were ruby chard hold less hope. Onions and celery root look OK, but haven’t been pulled yet. Kale, usually a staple in our winter garden, is suffering.

Taking stock of the successes and failures, I can see things I should have done: more mulch around the broccoli, maybe a floating row cover or cloche over it. Definitely much more protection over the poor chard. But just keeping myself warmly clothed on my rare forays out into the crisp weather has been enough of a challenge. I’ll chalk it up to experience and hope the broccoli will finally bounce back. Warmer weather is on the way; this week’s forecast is for high 40s daytime, and mid-30s overnight. I’m ready.

empty bucket

My harvest bucket is pretty empty on a mid-winter walk through the frosty garden landscape.

Plunge In Pungent Alliums

To paraphrase an old saying: Give a person garlic and they can ward off vampires once; teach a person how to grow garlic, and they will be free of vampires for a lifetime.

Have you planted your garlic yet? I try to get mine in by Halloween, but given our unseasonably warm fall, I think Maritime Northwest gardeners could still get a crop in the ground, unless your garden is in a cold microclimate.

Spanish Roja garlic

Spanish Roja garlic. I save the biggest heads for replanting.

In my Edible Garden column for Edible Seattle’s Sept/Oct issue, I outlined many of the considerations for planting alliums, the genus that includes garlic, onions and shallots. You may still be able to find some of these alliums in nurseries, and all of them would be well worth a try.

Garlic is my favorite, because it comes in so many types and flavors, far more interesting than the typical white supermarket variety. Look for unique varieties that are spicy or sweet, with cloves striped in red or purple. Learn all about types and varieties from Filaree Garlic Farm.

See my earlier article Cloves in Bed, All is Well on the steps to planting garlic.

The onions you’d find now in the nurseries would be seedlings, small groups of grass-like starts growing in soil. Try Walla Walla Sweet, if you can get it, as they do well in our climate.

Seedlings are different from onion sets or bunches, traditionally sold in the spring. Sets are baby onion bulbs that are sold dry, and will come to life and grow after planting. Bunches are small plants that had been started the previous fall and dug from their bed before being banded together and sold by the dozen in the spring.

As we near the end of the gardening year, consider where in your garden these spicy spikes might go, see if you can find any in the nurseries or buy some from a farmers market stand, and get them in the soil as soon as possible.

Cover the soil with a loose mulch like straw to soften the winter rains, and watch for the little allium spikes to break ground early next year, signifying the start of another gardening season. I guarantee that you’ll be vampire-free.

Cover Fall Edibles Now

In my Seattle garden, fallen leaves are drifting up around the edges of my vegetable beds like Technicolor waves lapping at the shore. Time to deploy the season extension.

This time of year, nature is getting ready to go dormant. Despite the occasional warm, sunny day, the weather pattern is changing. Shorter days (and longer nights), cooler temperatures, glorious rain, from drizzle to downpour, all signal the change in plants. Growth slows down. Cell walls begin to thicken in the plants, mirroring our defensive layers of fleece and wool.

Stave off the inevitable decline in your vegetable garden by covering those plants that are actively growing. The ones that will feed you salad this fall can be nursed along for a few more weeks if covered with a cloche or a cold frame.

Three devices

Three season extension devices protect fall and winter crops: hoop-house cloche, triangle tunnel and cold frame.

The root crops that are going to be overwintered will be aided by a blanket of garden fleece, also known as floating row cover. Later this fall, you can pull off the FRC and cover those beets and carrots with a cloche, giving them more protection during our coldest time.

dome hot cap

The last of the summer basil crop is nursed along under the dome hot cap.

The kale, cabbage, broccoli and Brussels sprouts will benefit from a top-dressing of compost and straw mulch, between the rows and around the plants. This step can be taken for all the fall and winter veggie plants, but isn’t as necessary for those under a cloche or cold frame until the weather really reaches our daytime winter temperatures of 45 degrees. Still, I often do this now around my salad greens too, just since I’m out in the garden with the straw at hand. It’s often more pleasant to do it on a nice fall day than try to wait for a break in the winter rains that will take hold in November.

The main reason to do this season extension and mulching work is to protect our plants from the colder temperatures, pounding rains and desiccating wind.

A few weeks ago I put in a late batch of lettuces and raddichio into a long hoop-house cloche. With the unseasonably warm weather, I’ve been able to take that off for days at a time, and the veggies are nearing harvest. Now that rains and cooler weather are predicted, I’ve put it back on again.

Often at this time of year I’ll set up the cold frame over a bed with starts. It’s amazing to check the soil temperature inside the cold frame and in the bed next to it. Inside the bed, the temperature of the soil will be well above 60, while in the open garden the soil temperature is inching down toward the mid-50s. Capturing that warmer soil temp, keeping it from dropping so fast, is a key benefit to season extension.

cold frame

My Twinwall cold frame is keeping the fall salad greens robust.

Also this week we’ve had a couple of days of significant rain. At times, it’s come down pretty hard. A soft rain is great for watering the beds, and I open the season extension devices for a few hours in early afternoon if a light rain is coming down. The best situation is a nice soft rain for an hour or two, followed by a clearing and light breeze, so the plants dry out. Regular moisture on the leaves and stems of fall veggies can promote rot. If I can’t get the timing right to open the season extension during a light rain, I hand-water the beds as needed.

And I always keep the devices closed during a heavy rain. Over time, heavy rains will compact the soil, leach out the nutrients, and reduce those soil temps — all things I’m trying to avoid. Score another benefit for season extension.

floating row cover

Fall beets and carrots are growing nicely, and bug free, under a layer of floating row cover.

The winds are also gusting this time of year. Combined with cooler temperatures and rain, the wind can be hard on tender vegetable crops. The worst effect is when it blows the top layer of

hot caps

A couple of unusual kales that were struggling are getting a boost by being covered with glass hot caps.

mulch away from the base of the plant, exposing the plant’s fine root system. Those roots will dry up, making it tough for the plant to survive, much less grow. Such stress will invite pests, and can trigger the plant’s desire to bolt and go to seed.

One final idea concerning season extension: what’s good for the plants is also good for the pests. In this sense: the pests love the warmer, drier location too. I’m picking a lot of slugs and snails out of my season extension devices right now, and off the plants. I need to be diligent about this, because they’re all drawn to the warm place with plentiful food. As the temperatures continue to drop they’ll become less of a problem, but right now, I need to pay attention if I want to keep those fall crops around for my autumn dinners, and not just be feeding the pests.

new cloche

I’m having fun with my commercial-made cloche. The long single-row device has an internal wire frame and zippered vents with mesh.

Fall in the maritime garden is a time to appreciate our weather. The change is usually not abrupt, giving me a chance to also adjust my own pace to the slowing rhythm of nature. But the decline into winter is inevitable, which is another lesson. At this pace, it seems more possible to stay in the moment, enjoying the color and patterns of those fall leaves as they naturally mulch the margins of my garden.

 

Holiday weather blues? Don’t despair, plant!

It was the best of weather, it was the worst of weather.

Memorial Day Weekend in Seattle will bring up brooding Dickensian thoughts. What should herald the start of summer here often disappoints. When all you want to do is take your kids hiking, go to a music festival, wheel off on a nice long bike ride, or simply just host a BBQ, you have to look to the skies, and judge the depth of the grey.

Why, then, would I start this post so optimistically? The best of weather, by what standards? Well, my Brussels sprouts love it.

Brussels sprouts seedlings

These Brussels sprouts, sown on May 7, got potted up to 4″ pots this week, and will be ready for the garden by mid-June.

At this stage of the year—what I call mid-spring in my catalog of mini-seasons—I am engaged in a garden tug-of-war. Part of me wants to grow the fattest red tomato on the block, so juicy it drips down my shirt. I want big pepper plants heavy with spicy pods. Some years, I even yearn for a stand of corn.

But my muscles yank me back to cool-season crops too, and possibly more to reality. Mid-spring is a time for struggle on the part of my tomato plants, and the peppers can stay under cover or fight for their survival. But it’s a glorious time of growth for cool-season vegetables. They celebrate this dreary holiday weekend weather like twirling hippies at a Phish concert.

And now, when you’re focused solely on getting those hot crops of summer in the ground, let the cool breezes of a maritime spring clue you in: time to give those long-season vegetables of next winter some love.

Tomatoes and Peppers in Greenhouse shelves

The tomatoes are getting leggy, and the peppers aren’t getting any younger in their pots. But the greenhouse shelves work great!

Here’s a quick list of what to sow now in pots for planting out in June and July:

  • Purple sprouting broccoli
  • Brussels sprouts
  • Cabbage (winter)
  • Parsnips

And here are some things to plant directly in the garden in mid-July for fall and winter eating:

  • Collards
  • Jerusalem artichoke
  • Kohlrabi
  • Rutabaga
  • Turnip

There are many other, shorter-season veggies that can be sown later in the summer and into the fall for fall and winter eating, but for right now, instead of trying to jump-start summer, skip over it and look to fall. Put on a Dead record and rave on with your brassicas.

Final presentation at City People’s

Many Seattle gardeners are mourning the impending loss of City People’s Garden Store on Madison, which got the land sold out from under it for the inevitable mixed-use development. It was the first nursery I used when I moved to Seattle in the mid-1980s, and I still hold it fondly in my mind. When it closes at the end of this year, it will be a major loss for city gardeners. I will miss it.

I’ve been giving a series of edible gardening talks there for years, and my last talk is coming up next weekend. On Sunday, June 5 at 11 a.m. I’ll do a seminar on starting long-season vegetables. Hope you can join me, support the store with some purchases and give City People’s a proper send-off.

Early Winter in My Outdoor Refrigerator

A good rule of thumb for winter edibles is to have your vegetables large enough for harvest by mid-December, which I achieved with some of my plantings. Carrots, beets and kohlrabi are ready anytime.

The goal is to use the garden as an outdoor refrigerator, planting crops that will store well in situ and can be harvested as needed. Broccoli, Brussels sprouts and kale are on that list.

With leafy greens, I have some ready now, and some smaller plants under good protection that will hopefully give me a very early harvest when the days begin to get noticeably longer a month from now, well after the solstice.

Here are some images of my garden right now.

cold frame open

Airing out the lettuce, spinach and mustards growing in one cold frame.

Cold frame greens

Greens in a cold frame: two types of lettuce ready for picking, spinach on the right, and a row of seedlings in front that promises a future harvest.

Beets

A winter beet harvest is just what the doctor ordered.

Carrots

The soil for these carrots could have been lighter. Heavy soil with rocks can lead to deformed roots. Still, how sweet they are!

In the foreground is my carrot bed, protected by floating row cover.

In the foreground is my carrot bed, protected by floating row cover and straw mulch.

Kohlrabi and turnips

A kohlrabi ready for harvest sits between a glass cloche in the foreground and a window A-frame in the back that is covering Japanese turnips.

Parsley

Parsley makes a thick cover crop — and of course we can eat it!

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