How to Grow Kale

Growing kale is a rewarding endeavor, as it's a nutritious and versatile vegetable that can thrive in various environments.

How to Grow Kale
Growing Kales

Whether you're planting Kale indoors or outdoors, understanding the basics of germination, watering, and harvesting will set you on the path to success in cultivating this superfood.

Kale prefers well-drained, fertile soil with a pH between 6.5 and 6.8 and needs ample sunlight to flourish.

Be sure to space your plants 18 to 24 inches apart and provide them with 1 to 1.5 inches of water each week to maintain steady growth.

As your kale plants mature, you will have a continuous supply of vitamins, antioxidants, and nutrients in your garden.

About Kale

Kale is a nutrient-rich vegetable known for its large, edible leaves in various colors and shapes.

As a member of the Brassica oleracea family, it has several popular varieties, including curly, dinosaur, and red Russian Kale.

This leafy green thrives in cooler temperatures and enjoys full sun or partial shade.

To grow healthy kale plants, ensure your soil has a pH of 6.5 to 6.8 and is well-draining, adding compost or other organic matter to maintain high nitrogen content.

Growing Kale

To start planting Kale, select an area with full sun and well-drained, fertile soil, ideally with a pH of 6.5 to 6.8.

Prepare the soil by mixing in several inches of aged compost or other rich organic matter to ensure high nitrogen content, encouraging healthy leaf growth.

Sow kale seeds about 1/2 inch deep and space them 18 to 24 inches apart in rows.

Plant your Kale in spring or fall when temperatures are cooler, as Kale thrives in cooler temperatures and can become woody and bitter in warm weather.

Ensure to provide at least 1 to 1.5 inches of water each week to keep the soil moist, promoting healthy and fast growth of your kale plants.

Caring for Kale
Caring for Kale

Caring for Kale

Sun and Temperature

Kale thrives in full sun but can also tolerate partial shade.

Ensure your kale plants receive at least 6 hours of sunlight daily and can grow well in temperatures between 40-85°F, with optimal growth between 60-70°F.

Water and Humidity

Keep your kale plants well-watered by providing 1 to 1.5 inches of water weekly. Ensure the soil remains consistently moist, but avoid overwatering to prevent root rot and other issues.


Kale grows best in well-drained soil enriched with organic matter, such as aged compost or potting mix. Aim for a soil pH between 6.0 and 7.0 for optimal growth.


Incorporate a few inches of compost into the soil before planting, and feed your kale plants with a continuous-release plant food every six to eight weeks.

A seaweed emulsion, like Neptune's Harvest Hydrolyzed Fish and Seaweed Fertilizer, can help boost growth when used lightly throughout the growing process.


If you're growing Kale in containers, repot the plants when you notice roots growing out of the drainage holes or when the growth appears stunted.

Use a well-draining potting mix and ensure the new container allows the roots to expand.

Pruning and Propagation

As your kale plants grow, harvest leaves from the bottom up, allowing the plant to continue growing and producing new foliage.

When transplanting seedlings, space them 12 inches apart, in rows 18 to 30 inches apart, planting them at the depth they were growing in their containers.

Troubleshooting Plant Problems

Growing Problems

Your kale plant may face common growing problems such as discolored leaves, bending, and leggy seedlings.

To fix these issues, ensure proper soil preparation with added fertilizer, maintain a suitable temperature, provide adequate water and light, and space your seedlings 8 to 12 inches apart.

Pests and Diseases

Kale plants can be affected by pests like cabbage loopers and diseases such as bacterial leaf spot or black rot.

To prevent pest infestations, you can use row covers to protect your plants, while for diseases, treat seeds with hot water at 122℉ (50℃) for 15 minutes or opt for heat-treated seeds, which are immune to common diseases.

Companion Planting

Incorporate companion planting in your garden to help your Kale thrive.

Planting Kale with compatible plants, such as tomatoes or onions, can deter pests and enhance overall plant health.

Meanwhile, avoid planting it near plants that may attract pests or adversely affect Kale's growth.


Growing Kale can be a rewarding addition to your garden, providing a continuous supply of nutritious greens throughout the season.

To ensure success, plant kale seeds about 1/2 inch deep with 1 1/2 to 2 feet spacing and use high nitrogen content soil by adding compost for optimal leaf growth.

Caring for your Kale involves regular watering and keeping an eye on pests.

Harvest leaves when they are young and tender by cutting from the bottom up, allowing the plant to grow.

Your Kale will thrive and become a staple in your home garden with proper care and attention.

Frequently Asked Questions

When is the best time to plant kale?

You can sow kale seeds directly when soil temperatures are between 45°F and 85°F. If you want to start the seeds indoors to prevent frost damage, plant them 6-8 weeks before the last expected frost date.

What are the ideal growing conditions for kale?

Kale grows best in well-draining soil with a pH between 6.0 and 7.0. Ensure your kale plants receive at least 6 hours of direct sunlight daily, but they can tolerate partial shade if needed.

How often should kale be watered?

Water your kale plants deeply but infrequently, aiming for at least 1 inch of water per week. Maintaining consistent soil moisture without overwatering is essential, as this could lead to root issues.

How can I ensure continuous kale harvest throughout the season?

Stagger your kale plantings every 2-3 weeks throughout the growing season to ensure a continuous harvest. Additionally, harvest the outer leaves first to encourage continuous growth and production.