Grow Kale

While kale is generally thought of as a cold weather crop, it is fairly resilient and can tolerate temperatures as low as {{safesubst:#invoke:convert|convert}} and as high as {{safesubst:#invoke:convert|convert}}. A dark cooking green, kale hails from the cabbage family as a superfood packed full of essential vitamins and minerals. Follow the steps below to plant your own garden of kale.

Steps

Preparing Your Growing Space

  1. Choose a kale variety that best suits your growing climate. Kale is usually grouped by leaf shape, and although growing times vary between varieties, most kale is ready for harvest between 45 and 75 days after transplanting.
    • Curly Kale is sweet and mild and is one of the most commonly found kale varieties. It is characterized by its curly, wrinkled leaves.
    • Lacinato or Dino Kale also has a wrinkled texture, though its leaves are tall and skinny.
    • Premier Kale is known for its cold hardiness and its ability to grow quickly.
    • Siberian Kale is the hardiest variety that (as the name suggests) can withstand harsh temperatures and easily resist pests.
    • Red Russian Kale has impressive red twisting leaves. It is similar in its resilience to Siberian kale.
    • Redbor Kale is a dramatic deep purple and red kale, perfect for adding color to any dish.
    • Walking Stick Kale has a thick stalk that can grow up to six feet tall. The stalk can be used as a walking stick, hence the variety name.[1]
  2. Choose a pot or a garden plot. You will need at least six square inches of growing space per plant regardless of your container type. Choose an area with full sunshine if you’re planting during the fall, and an area with partial shade if you're planting in the spring.
    • Avoid low-lying areas and spaces where water tends to collect and/or flood. If you do not have an area with suitable drainage, you can build a raised garden bed.
    • Use cedar planks to build your garden bed, as cedar does not rot when it gets wet.
  3. Do a Home Soil Test. Make sure that you plant your kale in fertile, loamy soil, amended with nitrogen, phosphorus, or potassium if it is low in these nutrients. Sandy or clay-like soil will hurt the kale's flavor and production ability. Kale prefers soil with a pH between 5.5 and 6.8.
    • If the pH level is below 5.5, enrich the soil to make it less acidic.
    • If the soil pH is above 6.8, mix in granular sulfur to lower the pH level.
  4. Know when to plant. If you're starting your seeds or starts indoors, plant them between five and seven weeks before the last frost. If you're going to start your kale outside, plant the seeds two to four weeks before the last frost or at least 10 weeks before the first frost in the fall.[2]
    • For kale seeds to germinate, the soil temperature just has to be at least {{safesubst:#invoke:convert|convert}}.
    • Kale seeds sprout most effectively in a soil temperature of {{safesubst:#invoke:convert|convert}}.

Growing Kale from Seeds

  1. Mix soil and fertilizer in small pots at least six square inches. Use organic fertilizers and composts when possible. Kale particularly likes fish emulsion and compost tea.
  2. Alternately, churn your garden soil and add fertilizer to sow seeds directly into the garden. Be sure that you sow seeds two to four weeks before the last frost date if you are planting directly in the garden.
    • If the plants start to crowd each other as they grow, you can always further thin the plants out to allow for more space between each plant.
  3. Sow seeds under a thin layer of soil. Kale seeds are small and can only grow through ¼ to ½ inch (6–12 mm) of soil. Space the seeds about three inches (7.5 cm) apart. Pat the soil lightly to cover the seeds.
  4. Water the plant thoroughly. While the seeds grow, allow the top layer of the soil to dry out between watering.
  5. Grow the seedlings until they are three to four inches high. At this point, your kale seedlings should have at least four developed leaves. It takes four to six weeks for your seedlings to reach this stage.

Transferring Kale to Your Garden

  1. Spread a thin layer of fertilizer evenly over the growing area. Follow the directions for your specific type of fertilizer for precise amounts. For compost and mulch, spread a layer a few inches deep. For seaweed powder or rock dust, apply a thin, even sprinkle.
  2. Remove the kale seedlings from their container. Do so by gently patting the container on its side if you used plastic pots to start your seedlings. If you purchased kale starts at a garden supply store or nursery instead of starting with seeds, simply remove the purchased seedlings from their plastic containers.
  3. Use your hands or a hand trowel to dig holes {{safesubst:#invoke:convert|convert}} apart. The holes should be just deep enough to plant the seedlings at the same level they were growing in the pot. If you are planting multiple rows, make sure that the rows are {{safesubst:#invoke:convert|convert}} apart.
  4. Plant your starts in the holes. Pat the soil down to the same level it was in the plant, without burying any leaves. Make sure to plant the starts perpendicular to the ground, regardless of the shape of the roots.
  5. Water your plants thoroughly.

Caring for and Harvesting Your Kale

  1. Keep the soil around your kale plants moist. Depending on the amount of sun your plants receive, you may have to water them as often as every day.
  2. Fertilize your kale plants during the growing season every six to eight weeks. Fertilizer helps the kale grow strong and robust and keeps it producing healthy, sweet leaves.
  3. Put mulch around the kale if the leaves are rotting or appear discolored. Make sure that the kale is at least six inches tall before you mulch your plants. Mulching helps prevent wet soil from sticking to leaves and molding them.
  4. Pick off any discolored or withered leaves when they appear. Doing so helps to reduce the chance of harmful pests.
  5. Harvest the kale about 70-95 days after sowing and 55-75 days after transferring to your garden. The plant should be at least eight inches tall before you harvest the leaves. Be aware that growing time varies according to each variety, so be sure to look up the appropriate time before harvesting.
    • Pick off the outside leaves first if just harvesting individual leaves.
    • If harvesting the entire plant, cut the stem down to about two inches above the soil with one clean cut. This will allow the plant to continue to produce leaves.
    • Don't leave the leaves on the plant for too long after they are ready for harvest. Doing so will produce bitter, tough leaves.[3]
  6. Enjoy your fresh kale!



Tips

  • Kale can be eaten raw, steamed, braised, boiled, sauteed, baked, or even fried.
  • Kale will last in the refrigerator for about three weeks.
  • Homegrown kale is fairly resistant to fungal and bacterial diseases.

Warnings

  • Do not plant kale near beans, strawberries, or tomatoes.
  • Pests include cabbage moth caterpillars, grey cabbage aphids, cabbage white butterfly moth caterpillars, snails, and slugs.

Related Articles

  • Make Kale and Chickpea Soup
  • Make a Warm Potato, Carrot and Kale Salad
  • Make Chorizo, Potato and Kale Soup
  • Grow Cauliflower

Sources and Citations

  1. ↑ http://ecolocalizer.com/2012/03/25/delicious-nutritious-kale-photo-guide-to-different-varieties/
  2. ↑ http://www.almanac.com/plant/kale
  3. ↑ http://gentleworld.org/kale-an-easy-beginners-guide-to-growing/#Different varieties of kale

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