Kale: The ornamental vegetable
Although kale is already falling off trendy menus it should be a staple in any good vegetable garden – or flower garden, for that matter. It’s beautiful and nutritious both and it comes in many interesting varieties. Its only downside is that rabbits and squirrels love it just as much as we do.
When it comes to most vegetables in Canada, we race to beat the cold weather, but for kale, the closer the frost, the sweeter the leaf. Kale actually tastes better when harvested after frost. Even frozen stiff in the garden, it will come back just as sprightly after thawing as it was in July. You can freeze your earlier harvest for crisp tasty salads or steamed dishes throughout the winter.
Conversely, the hotter the weather, the more bitter and tough the kale. Keep it in the shade during the hottest parts of summer, moving it to direct sunlight as the weather cools. Add a little oil and vinegar to reduce any strong flavour.
You can start kale indoors five to seven weeks before the last frost. Outdoors, sow the seeds one half inch deep, six inches apart. You can sow as late as two to four weeks before first frost. It needs soil temperatures to be between 40 and 70 degrees F to sprout.
Plant kale with beets, celery, herbs, onions and potatoes but not with beans, strawberries or tomatoes. Very heavy clay soils or very light sandy soils can both affect flavour adversely. It likes a pH of 5.5 to 6.8.
You can start using spring planted kale in May when the small leaves will be tender – generally, though, it takes 70 to 95 days from seed to harvest. When the plant is eight to ten inches tall, you can cut back the whole plant and it will sprout new leaves in seven to 14 days.
Called the new beef, the Queen of Greens, kale has been recently rediscovered in the kitchen but people have been appreciating this nutritious green all over Europe for centuries. In the Middle Ages, kale was a staple in the kitchen and was the most common green vegetable eaten. It was served in Italy as an ingredient in ribollita soup and called cavolo nero; in Portugal it was chopped and mixed with potatoes and called caldo verde. The Irish mixed kale with mashed potatoes and cream, naming it colcannon and in the Netherlands a similar dish was called boerenkool when it was mixed with bacon. The Germans made kale stew. Often, it was served with sausages. In Scotland, the word kale is slang for food. In The Second World War it was grown in victory gardens.
Kale is packed with calcium, vitamins K and A (100 grams has 86 per cent of your daily A needs); is low in calories, having only 36 in a cup. In addition to a miner’s trove of trace metals, 100 grams of kale is packed with only 5.63 grams of carbs; 1.9 grams of protein; 76 per cent of your daily beta carotene needs and less than half a gram of fat.
Ornamental kale are colourful enough for the flower bed.