Plant kale in early spring or fall, spacing seedlings 12 inches apart for robust leaf growth. If you’re wondering how to plant kale, you’ve come to the right place. This leafy green is one of the easiest vegetables to grow, and it thrives in cooler weather. Whether you’re a beginner or a seasoned gardener, these steps will help you get a bountiful harvest.
Why Grow Kale
Kale is packed with nutrients like vitamins A, C, and K. It’s also incredibly versatile in the kitchen. You can use it in salads, smoothies, soups, or even bake it into crispy chips. Plus, kale is frost-tolerant, so it can keep producing well into late fall or early winter.
Growing your own kale saves money and gives you fresh, organic greens right from your backyard. It’s a low-maintenance crop that rewards you with continuous harvests.
How To Plant Kale
Now let’s get into the core steps. Follow this guide to plant kale successfully from seed or transplant.
Choose The Right Time
Kale prefers cool weather. Plant seeds 4-6 weeks before the last frost in spring. For a fall crop, sow seeds 6-8 weeks before the first frost. In mild climates, you can grow kale all winter.
Soil temperature should be between 45°F and 75°F for best germination. If it’s too hot, seeds may not sprout.
Select A Sunny Location
Kale needs at least 6 hours of direct sunlight daily. Partial shade is okay, but growth will be slower. Choose a spot with well-draining soil.
If your soil is heavy clay, consider raised beds or containers. Kale grows well in pots that are at least 12 inches deep.
Prepare The Soil
Kale thrives in rich, loamy soil with a pH between 6.0 and 7.5. Test your soil if possible. Amend it with compost or aged manure before planting.
- Remove weeds and rocks from the planting area.
- Loosen the soil to a depth of 8-10 inches.
- Mix in a balanced organic fertilizer according to package directions.
Good soil preparation ensures strong root development and healthy leaves.
Plant Kale Seeds
If you’re starting from seed, sow them 1/4 to 1/2 inch deep. Space seeds about 3 inches apart in rows. Thin seedlings to 12 inches apart once they have two sets of true leaves.
- Make shallow furrows in the soil.
- Place seeds in the furrow, covering lightly with soil.
- Water gently to keep the soil moist but not soggy.
- Seeds usually germinate in 5-10 days.
For a continuous harvest, plant a new batch every 3-4 weeks.
Plant Kale Transplants
If you buy seedlings from a nursery, transplant them when they are 4-6 inches tall. Dig holes spaced 12-18 inches apart. Place each plant at the same depth it was in the pot.
- Water the transplants well before and after planting.
- Firm the soil around the roots gently.
- Add a layer of mulch to retain moisture and suppress weeds.
Transplants give you a head start, but seeds are cheaper and offer more variety.
Water Consistently
Kale needs about 1-1.5 inches of water per week. Keep the soil evenly moist, especially during dry spells. Inconsistent watering can make leaves tough and bitter.
Water at the base of the plant to avoid wetting the leaves, which can lead to disease. Drip irrigation or soaker hoses work well.
Fertilize Lightly
Kale is a heavy feeder, but too much nitrogen can cause lush leaves that are less flavorful. Side-dress with compost or a balanced fertilizer every 4-6 weeks.
If leaves start to yellow, it may need more nitrogen. Use a fish emulsion or seaweed spray for a quick boost.
Mulch And Weed
Mulch helps keep soil cool and moist. Apply a 2-3 inch layer of straw, grass clippings, or shredded leaves around the plants. Keep mulch away from the stems to prevent rot.
Weed regularly to reduce competition for nutrients. Kale’s shallow roots can be damaged by aggressive hoeing, so hand-pull weeds near the plants.
Protect From Pests
Common kale pests include aphids, cabbage worms, and flea beetles. Use row covers to keep insects away. Inspect leaves weekly and remove any eggs or caterpillars by hand.
- Plant companion herbs like dill or cilantro to attract beneficial insects.
- Spray with neem oil or insecticidal soap if infestations occur.
- Encourage birds and ladybugs to visit your garden.
Healthy plants are less susceptible to pests, so keep your kale well-watered and fed.
Harvest Kale Properly
You can start harvesting when leaves are about the size of your hand. Pick the outer leaves first, leaving the inner ones to continue growing. This method gives you multiple harvests.
- Use clean scissors or shears to cut leaves at the stem.
- Harvest from the bottom of the plant upward.
- Leave at least 4-5 inner leaves for regrowth.
Kale tastes sweeter after a light frost. Don’t wait too long, as older leaves can become tough.
Common Mistakes To Avoid
Even experienced gardeners make errors. Here are a few to watch out for when learning how to plant kale.
Planting Too Late In Spring
Kale bolts (goes to seed) in hot weather. If you plant too late, you’ll get bitter leaves. Stick to early spring or late summer for best results.
Overcrowding Seedlings
Thinning is essential. Crowded plants compete for light and nutrients, leading to weak growth. Always space them 12 inches apart.
Underwatering Or Overwatering
Both extremes stress the plant. Check soil moisture with your finger. If the top inch is dry, it’s time to water.
Ignoring Soil Quality
Kale grows best in fertile soil. Skipping compost or fertilizer results in pale, small leaves. Invest in good soil prep.
Not Harvesting Regularly
If you leave leaves too long, the plant may stop producing. Regular harvesting encourages new growth.
Growing Kale In Containers
Don’t have a garden? No problem. Kale grows well in pots on a patio or balcony. Choose a container at least 12 inches deep with drainage holes.
- Use a high-quality potting mix enriched with compost.
- Place the pot in a sunny spot.
- Water more frequently than garden plants, as containers dry out faster.
- Fertilize every 2-3 weeks with a liquid organic fertilizer.
Dwarf varieties like ‘Dwarf Blue Curled’ are perfect for containers. They stay compact but still produce plenty of leaves.
Kale Varieties To Try
There are many types of kale, each with unique flavors and textures. Experiment with different ones to find your favorite.
Curly Kale
This is the most common type. It has ruffled leaves and a peppery taste. Great for salads and chips.
Lacinato Kale
Also called dinosaur kale, it has dark blue-green leaves with a bumpy texture. It’s sweeter and more tender than curly kale.
Red Russian Kale
This variety has flat, fringed leaves with purple stems. It’s mild and slightly sweet, perfect for raw dishes.
Siberian Kale
Hardy and cold-tolerant, Siberian kale has broad, flat leaves. It’s ideal for winter growing.
Ornamental Kale
Often used as a decorative plant, it’s also edible. The leaves are colorful, with white, pink, or purple centers.
Extending The Harvest Season
With a little planning, you can enjoy kale for months. Here are some tips to keep it going.
Succession Planting
Plant new seeds every 3-4 weeks. This ensures a steady supply of young, tender leaves throughout the season.
Overwintering Kale
In mild climates, kale can survive winter. Mulch heavily around the base to protect roots. You’ll get an early spring harvest.
Using Row Covers
Floating row covers protect plants from frost and pests. They also add a few degrees of warmth, extending the growing season.
Harvesting From The Same Plant
With proper care, a single kale plant can produce for months. Keep picking outer leaves and it will keep growing from the center.
Frequently Asked Questions
What Is The Best Month To Plant Kale?
It depends on your climate. In most areas, plant in early spring (March-April) or late summer (August-September) for a fall harvest. Check your local frost dates.
Can I Plant Kale In Partial Shade?
Yes, but it will grow slower and produce smaller leaves. Aim for at least 4-6 hours of sun for best results.
How Deep Should I Plant Kale Seeds?
Sow seeds 1/4 to 1/2 inch deep. Cover lightly with soil and keep moist until germination.
Do I Need To Fertilize Kale?
Yes, kale benefits from regular feeding. Use a balanced fertilizer or compost every 4-6 weeks during the growing season.
How Long Does Kale Take To Grow From Seed?
Kale is ready to harvest about 50-75 days after planting seeds. Transplants mature faster, in about 30-40 days.
Final Tips For Success
Growing kale is rewarding and simple. Start with good soil, consistent water, and plenty of sun. Don’t be afraid to try different varieties.
Remember to harvest regularly to keep plants productive. And if you see pests, act quickly to prevent damage.
With these steps, you’ll have fresh, homegrown kale all season long. Enjoy the process and the delicious results.