Kale is the rock star of the vegetable world these days, but
unlike many pop stars, it has no bad habits. Low in calories yet high in
vitamins, minerals and anti-oxidants, it appears on menus and cooking shows in
smoothies, soups, salads, even as baked chips. The good news for gardeners is
kale makes a lovely plant for gardens and flowerbeds in cool weather. Plant it
in the fall and early winter and you can enjoy the sight of colorful, textural
foliage and the flavor of fresh greens all winter and spring.
How to Plant: Sow
kale seed directly into the garden in fall. Drop seeds 3 to 4 inches apart in
moist soil. Keep the soil consistently damp as the seeds germinate and the
seedlings grow. Thin seedlings as they mature until plants are 12 to 16 inches
apart.
Buy kale as young transplants to place in beds or containers
later in the season. Buy plants that are still small or older plants in
l-gallon containers or larger. Growth will be stunted if plants are grown in
pots that are too small.
Hardiness: Kale
is a biennial, meaning it will grow for 2 years before it flowers and dies.
However, the leaves become tough and bitter and the plants unattractive in the
heat, so kale is usually grown as a cool season annual, replaced in late
spring. Kale tolerates the usual winter temperatures of Texas
without protection. If the temperatures drop into the low 20s, cover your
plants with frost cloth or sheets until the cold spell passes.
Harvesting: The
flavor of kale improves after a frost, and tender young leaves have the
sweetest flavor. Kale sprouts leaves from a center stalk, or sends up loose
clumps of individual leaves. Cut the older, outside leaves with a sharp knife
so the newer leaves will continue to grow. Rinse the leaves thoroughly then
allow them to sit for 5 minutes before cooking. Check the internet for recipes;
kale is cooked by many different methods.
Varieties: There
are several types of kale and many different varieties. Try them all to
discover which grows and tastes best to you.
- Ornamental kale grows into colorful,
rounded heads of foliage popular as bedding plants in cool season
plantings. The best variety for our area is ‘Peacock’ kale.
- Scotch kale has lovely, curled leaves
growing up to 24 inches tall. ‘Redbor’ is very popular in landscapes with
pink leaves turning deep purple in cold weather. ‘Winterbor’ has the same
structure with steely blue leaves. Both are very cold tolerant.
- Siberian kale has flat leaves with
highly serrated edges. Most common in our area is ‘Red Russian’ whose
gray leaves turn burgundy red as the season progresses. This is the least
cold-hardy type.
- Heirloom kale, also called Dinosaur
kale, has upright, blue-green, bumpy leaves. Sold under the names
‘Lacinato’, ‘Nero di Tosca’, ‘Tuscan Black’ or ‘Dinosaur’ it is the most heat
and cold tolerant and said to be the most flavorful kale.