
Russian Blue Kale
Kale is the ancestor of all other vegetables in the brassica family: broccoli, cauliflower, cabbage, rutabaga, and collard greens, to name a few. The kale varieties we eat today are at least two thousand years old. Over the last two millennia gardeners have selected the anomalies growing in the kale patch and propagated them by natural selection. We know these as broccoli, cauliflower, cabbage, rutabaga, and collard greens.
The family tree for kale is essentially two branches. Brassica napus species covers the Russian kales, rutabagas and canola (as in the oil). Brassica oleracea is home to regular kale, collard greens, Chinese kale and the other brassica vegetables like broccoli, cauliflower and cabbage.
Kale is like cabbage but without a head. It is one of the most hardy of vegetables and some report it surviving temperatures down to 5 degrees F.
In fact kale becomes sweeter and much more flavorful after a couple of frosts. To grow for fall, direct seed in garden 3 to 4 months before your first fall frost. With a little protection from the cold you can harvest kale until December in most locations and even through the winter in southern areas.
Kale can also be sown in October for an early spring harvest. Cover the little plants with straw before winter takes over the landscape. Or if you prefer you can direct seed in early spring along with other cool weather greens.
Kales are true biennials. To save seeds try one of the following methods. Leave mature plants in the ground with winter protection, then uncover and allow to go to seed the following spring. Another method is to dig and store kale plants with their roots in damp sand in a root cellar for winter and then plant out in spring and allow plants to go to seed.
Kale is becoming more popular as a vegetable and gardeners are cooking kale every way they can think of. The Greeks and Romans couldn’t get enough of it. Scandinavians simmer kale slowly for hours with cream, stock, salt and pepper and serve it with the Christmas ham. The Irish mix kale with mashed potatoes and call it colcannon. Even the so-called “ornamental” kales are edible.
Whether you grow it as a spring green to toss into green salads, lightly saute like spinach in late spring or plant for traditional cooked greens in fall, kale is delicious and packed with nutrition. I’ve found it works in virtually any recipe calling for cooked greens.
I’ll let you know how my “overwintering” kale experiments turn out.
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kale