How To Plant Kale From Seeds [ Full Guide ]

Kale is a nutrient-packed, easy-to-grow leafy green that is a great addition to any home garden. Planting kale from seeds is a rewarding and straightforward process that allows you to enjoy fresh, organic greens right from your backyard. In this comprehensive guide, we will explore the step-by-step process of planting kale from seeds, including choosing the right seeds, selecting the best location for planting, preparing the soil for kale, and essential tips for successful kale cultivation.

Quick Answer: How To Plant Kale From Seeds

Step 1: Choosing The Right Seeds

When planting kale from seeds, it’s crucial to start with high-quality seeds. Look for reputable seed suppliers or nurseries that offer organic kale seeds. Consider the variety of kale you want to grow – there are different types, including curly kale, dinosaur kale, and red Russian kale. Select a variety that suits your preferences and the growing conditions in your area.

Step 2: Selecting The Best Location For Planting

Kale thrives in full sun but can tolerate partial shade, making it versatile for various garden settings. Choose a location with well-drained soil and ample sunlight. Avoid areas with strong winds that may damage the delicate leaves. If you’re planting kale in containers, ensure they have drainage holes and are placed in a sunny spot.

Step 3: Preparing The Soil For Kale

Prepare the soil by loosening it with a garden fork or tiller to a depth of at least 6 inches. Add organic matter such as compost or aged manure to improve soil fertility and drainage. Kale prefers slightly acidic to neutral soil with a pH of 6.0 to 7.0. Test the soil pH and make amendments if necessary to ensure optimal growing conditions for kale.

Step 4: Planting Kale Seeds

Plant kale seeds directly in the prepared soil or in seed-starting trays if you prefer to start indoors. Sow the seeds about 1/4 to 1/2 inch deep, spacing them 12 to 18 inches apart in rows or in a pattern that allows for adequate airflow between plants. Water the seeds gently after planting to ensure good soil contact.

Step 5: Caring For Kale Seedlings

Once the kale seeds have germinated, provide consistent moisture to the seedlings. Water the plants deeply and regularly, especially during dry periods. Mulch around the seedlings to retain soil moisture and suppress weed growth. Fertilize the plants with a balanced organic fertilizer according to the package instructions, and monitor for pests and diseases.

Step 6: Harvesting Kale

Kale can be harvested when the leaves reach a desirable size, typically around 2 to 3 months after planting. Snip individual leaves from the outer portions of the plant, allowing the inner leaves to continue growing. Regular harvesting encourages new growth and ensures a continuous harvest throughout the growing season.

Choosing The Right Seeds

Selecting quality seeds is the first and crucial step in planting kale from seeds. Here’s some essential information to guide you in choosing the right seeds for your kale garden.

Organic Seeds

Opt for organic kale seeds to ensure they are free from synthetic chemicals and are produced using environmentally friendly methods. Organic seeds promote biodiversity and sustainability in your garden.

Variety Selection

Kale comes in various varieties, each with its unique flavor, texture, and appearance. Common types include curly kale, dinosaur kale (also known as Lacinato or Tuscan kale), and red Russian kale. Consider the flavor profile and growth characteristics of each variety to select the best one for your garden.

Seed Sources

Purchase kale seeds from reputable suppliers or nurseries. Look for suppliers that specialize in organic, non-GMO seeds to ensure the quality and authenticity of the seeds. You can also explore online seed catalogs and reviews to find reliable sources for kale seeds.

Selecting The Best Location For Planting

The success of growing kale from seeds greatly depends on selecting the right location in your garden. Here’s how to choose the best spot for planting your kale seeds.

Sunlight Requirements

Kale thrives in full sun, which means it requires at least 6 to 8 hours of direct sunlight daily. However, it can also tolerate partial shade, especially in hotter regions. Choose a location that receives ample sunlight during the day to promote healthy growth and abundant foliage.

Soil Drainage

Ensure the selected planting site has well-draining soil to prevent waterlogging, which can lead to root rot and other moisture-related issues. Kale prefers moist, but not waterlogged, soil conditions. Avoid low-lying areas or spots where water tends to accumulate after rainfall.

Wind Protection

While kale can tolerate some wind, strong gusts can damage its tender leaves and stems. Choose a location that provides some natural wind protection, such as near a fence, hedge, or larger plants. Alternatively, you can create a windbreak with garden fabric or other protective materials to shield the kale plants from strong winds.

Container Planting

If you plan to grow kale in containers, select large pots or planters that provide ample space for root growth. Ensure the containers have drainage holes to prevent waterlogging, and place them in a sunny spot, such as a patio or balcony, where the plants can receive adequate sunlight.

Preparing The Soil For Kale

Preparing the soil is a critical step in ensuring the success of your kale garden. Proper soil preparation provides the ideal growing conditions for kale plants to thrive. Here’s how to prepare the soil for planting kale from seeds.

Soil Testing

Before planting, conduct a soil test to determine the pH and nutrient levels of the soil. Kale prefers slightly acidic to neutral soil with a pH range of 6.0 to 7.0. You can purchase a DIY soil test kit or send a sample to a local agricultural extension office for analysis. Based on the results, adjust the soil pH and nutrient levels as needed.

Soil Amendment

Incorporate organic matter into the soil to improve its structure, fertility, and drainage. Add well-decomposed compost, aged manure, or other organic amendments and work them into the soil to a depth of at least 6 inches. This provides a rich, loose growing medium for the kale plants to establish strong root systems.

Weed Removal

Remove any existing weeds from the planting area before sowing kale seeds. Weeds compete with kale for nutrients, water, and sunlight, so it’s essential to clear the area of any unwanted vegetation. You can manually remove weeds or use a hoe to cultivate the soil and eliminate weeds effectively.

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Soil Moisture

Ensure the soil is adequately moist but not waterlogged before planting the kale seeds. If the soil is too dry, water the area a day or two before planting to ensure the seeds have a moist environment to germinate. Proper soil moisture is critical for seed germination and early seedling establishment.

Planting kale from seeds is an enjoyable and rewarding experience that allows you to cultivate fresh, nutritious greens in your own garden. By following the steps outlined in this guide, from choosing the right seeds to preparing the soil and caring for the seedlings, you can establish a thriving kale garden that provides a bountiful harvest throughout the growing season. Whether you’re a seasoned gardener or a beginner, successfully growing kale from seeds will add a delightful and nutritious addition to your home garden. With proper care and attention, your kale plants will flourish, providing an ongoing source of delicious, nutrient-packed leaves for you and your family to enjoy.

Planting Kale Seeds

Kale is a nutritious and versatile vegetable that is becoming increasingly popular in home gardens. Many gardening enthusiasts prefer to start their kale plants from seeds as it offers more variety and control over the growing process.

Choosing The Right Seeds

Before diving into the planting process, it’s important to select the right seeds. Opt for high-quality kale seeds that are fresh and have not expired. Look for reputable seed companies that specialize in vegetable seeds to ensure you are getting the best variety of kale for your garden.

Preparing Soil

Kale thrives in well-drained soil that is rich in organic matter. Start by clearing the planting area from any weeds, rocks, or debris. Loosen the soil using a garden fork or a tiller to a depth of at least 12 inches. This will provide enough space for the roots to grow deep and access the necessary nutrients.

Next, incorporate organic matter such as compost or well-rotted manure into the soil. This will improve soil structure, water retention, and nutrient content. Aim to add around 2-3 inches of organic matter and mix it thoroughly with the existing soil.

Sowing The Seeds

Kale seeds are relatively small and should be sowed shallowly. Make a furrow in the prepared soil by dragging a garden rake or your finger across the surface. The furrows should be around 0.5 inch deep and spaced about 12-18 inches apart. This spacing allows the kale plants to have enough room for growth and air circulation.

Carefully sprinkle the kale seeds along the furrows, aiming for a spacing of about 1 inch between each seed. Avoid overcrowding as it can lead to competition for resources and increase the risk of diseases.

Once the seeds are sown, lightly cover them with soil, ensuring that they are not buried too deeply. Gently pat down the soil to ensure good seed-to-soil contact. Finally, water the area gently to provide moisture for germination.

Germination And Thinning

Kale seeds usually germinate within 7-10 days, but it can take up to 2 weeks depending on the temperature and moisture levels. During this period, it is crucial to keep the soil evenly moist but not saturated. You can achieve this by misting the area with a fine spray or using a watering can with a gentle showerhead attachment.

Once the seedlings have sprouted, it’s essential to thin them out to provide sufficient space for growth. Thin the plants so that they are spaced about 8-12 inches apart. The strongest and healthiest looking seedlings should be retained, while the weaker ones can be gently pulled out. Thinning promotes better air circulation, reduces competition for nutrients, and overall improves the health of the kale plants.

Understanding Watering Requirements

Kale plants have specific watering requirements to ensure healthy growth and prevent common issues such as wilting or rotting of the leaves. Here are some guidelines to follow when it comes to watering your kale plants:

Watering Frequency

Kale plants prefer consistently moist soil, but it’s crucial not to overwater them. Overwatering can cause root rot and other fungal diseases. On the other hand, underwatering can lead to stunted growth and poor development. Aim to provide around 1 inch of water per week, either through rainfall or irrigation.

Watering Methods

To avoid waterlogging the soil, it’s recommended to use drip irrigation or a soaker hose. These methods deliver water directly to the base of the plants, ensuring deep penetration without wetting the leaves excessively. Avoid overhead watering, especially during the evening or night, as it promotes the growth of fungal diseases.

Monitoring Soil Moisture

Regularly monitor the moisture level of the soil by inserting your finger about 2 inches deep into the soil. If it feels dry at this depth, it’s time to water the plants. On the other hand, if it feels moist, it’s best to hold off on watering for a day or two. Remember that kale plants are more tolerant of slight drought conditions compared to excessive moisture.

Mulching For Moisture Retention

Applying a layer of mulch around your kale plants can help retain moisture in the soil, reducing the frequency of watering. Organic mulches, such as straw or wood chips, are excellent options as they decompose over time, enriching the soil with organic matter. Apply a 2-3 inch layer of mulch around the base of the plants, leaving a small gap around the stem to prevent rotting.

Fertilizing Kale Plants

Kale plants require specific nutrients for optimal growth and productivity. While the organic matter added during soil preparation provides a good foundation, additional fertilization may be necessary. Here are some tips on fertilizing your kale plants:

Choosing The Right Fertilizer

Kale plants benefit from a balanced fertilizer with an NPK ratio of 10-10-10 or 14-14-14. These numbers represent the percentage by weight of nitrogen (N), phosphorus (P), and potassium (K) in the fertilizer. A balanced fertilizer provides essential macronutrients required for healthy plant growth.

Applying Fertilizer

Before applying fertilizer, it’s important to thoroughly water the soil to ensure nutrients can be easily absorbed by the plants’ roots. Apply the fertilizer according to the package instructions, making sure to distribute it evenly around each plant. Avoid direct contact between the fertilizer and the leaves to prevent burning.

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It’s recommended to apply fertilizer every 4-6 weeks throughout the growing season, starting a few weeks after transplantation or when the seedlings have become established. This ensures a steady supply of nutrients for the kale plants as they continue to grow.

Organic Alternatives

If you prefer to use organic fertilizers, there are several options available. Compost and well-rotted manure are excellent choices as they not only provide nutrients but also improve soil structure and microbial activity. Additionally, organic liquid fertilizers, such as fish emulsion or seaweed extract, can be applied as foliar sprays to boost plant health.

Mulching For Optimal Growth

Mulching not only helps retain moisture in the soil but also provides additional benefits for kale plants. Here’s how you can maximize the benefits of mulching for your kale garden:

Weed Suppression

Mulching helps suppress weed growth by blocking sunlight and preventing weed seeds from germinating. This reduces competition for nutrients and space, allowing the kale plants to grow more vigorously. Keep in mind that it’s important to remove existing weeds before applying mulch to ensure they don’t get trapped underneath.

Temperature Regulation

Mulching acts as an insulating layer, helping to regulate soil temperature. This is particularly beneficial for kale plants as they can withstand cooler temperatures. The mulch keeps the soil warmer during colder months and cooler during hot summer days, providing a more favorable environment for growth.

Disease Prevention

Mulching can also help prevent certain diseases by acting as a barrier between the soil and the leaves. Soil-borne pathogens are less likely to splash onto the foliage during watering or rainfall, reducing the risk of infection. It’s important to remember that mulching alone cannot solve all disease issues, but when combined with proper cultural practices, it can contribute to overall plant health.

Choosing The Right Mulch

When selecting mulch for your kale plants, consider using organic materials such as straw, wood chips, or shredded leaves. These materials break down over time, adding organic matter to the soil and improving its structure. Avoid using mulch with high nitrogen content, such as fresh grass clippings, as it can interfere with the proper development of the kale plants.

Applying Mulch

Apply a layer of mulch around the base of the kale plants once they have become established. The mulch layer should be around 2-3 inches thick, making sure to leave a small gap around the stem to prevent rotting. Avoid piling the mulch against the stems, as this can create a moist environment and attract pests.

Growing kale from seeds is a rewarding process that allows you to have control over the variety and quality of your plants. By following the steps outlined in this guide, you can successfully plant kale seeds, understanding their watering requirements, fertilizing them appropriately, and utilizing mulching techniques for optimal growth. With proper care and attention, you will soon be enjoying a bountiful harvest of nutritious and delicious kale from your own garden.

Keeping Pests And Diseases At Bay

Kale is a nutritious leafy green vegetable that is packed with vitamins, minerals, and fiber. It is not only easy to grow but can also be harvested year-round. Whether you are an experienced gardener or a beginner, planting kale from seeds is a simple and rewarding process.

Like many other plants, kale is susceptible to certain pests and diseases. However, with proper care and preventive measures, you can effectively keep them at bay.

1. Start With Healthy Seeds

Begin with high-quality kale seeds. Make sure the seeds are fresh, free from diseases, and stored properly. You can choose from a wide variety of kale seeds, including curly kale, Tuscan kale, and Red Russian kale, among others.

2. Preparing The Soil

Kale thrives in well-drained, loamy soil with a pH level between 6.0 and 7.5. Before planting the seeds, prepare the soil by loosening it with a fork or spade. Remove any rocks, weeds, or debris that may hinder seed germination or growth.

3. Planting The Seeds

To plant the kale seeds, dig shallow trenches about ½ inch deep and 3 inches apart. Sow the seeds sparingly, leaving about 3 inches of space between each seed. Cover the seeds lightly with soil and gently press the soil down.

4. Watering The Seeds

After planting, water the seeds thoroughly. Ensure the soil remains moist during the germination process. Avoid overwatering, as this can lead to rotting or fungal diseases. Consider using a gentle spray or misting technique to provide adequate moisture without disturbing the seeds.

5. Mulching

Applying a layer of organic mulch around the base of the plants can help conserve moisture, suppress weeds, and regulate soil temperature. Organic mulch, such as straw or compost, can provide an additional layer of protection against pests and diseases.

6. Regular Observation And Care

Regularly inspect your kale plants for any signs of pests or diseases. Look out for common pests such as aphids, cabbage worms, and flea beetles. If you spot any signs of infestation or disease, take immediate action to prevent further damage. Options for pest control include manual removal, organic insecticides, or introducing beneficial insects like ladybugs and lacewings.

Pruning And Thinning Kale Seedlings

To ensure healthy and robust kale plants, proper pruning and thinning of seedlings are essential. This process helps in maintaining adequate air circulation, preventing overcrowding, and promoting strong growth.

1. Pruning

Once your kale seedlings have reached a reasonable height of around 3-4 inches, it’s time to start pruning. Pruning involves removing the lower leaves in order to encourage upward growth. Use a clean pair of gardening shears or scissors to cut the leaves at the base of the stem, making sure not to damage the main stem or other healthy leaves.

2. Thinning

As the kale seedlings grow, they may become overcrowded. Overcrowding restricts air circulation and nutrient availability, leading to weak growth and vulnerability to diseases. To thin out the seedlings, gently remove the weakest plants to create space for the healthier ones. This will allow the remaining plants to develop more fully.

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3. Regular Inspection

Regularly inspect your kale seedlings for any signs of overcrowding or weak growth. Keep in mind that proper spacing and pruning are critical for healthy plant development. By staying vigilant, you can ensure that your kale plants have enough space and resources to thrive.

Harvesting And Storing Kale

One of the best things about growing kale is the opportunity to harvest fresh leaves throughout the year. Here are some guidelines for harvesting and storing kale properly.

1. Timing Of Harvest

Kale leaves can be harvested at any stage of growth, depending on your preference. If you prefer tender baby kale, you can start harvesting as soon as the leaves reach about 2-3 inches in length. For mature leaves, wait until they are about 8-10 inches long. The leaves should be dark green and firm to the touch.

2. Harvesting Technique

When harvesting kale, use a sharp pair of garden shears or scissors to cut the leaves at the base of the stem. Avoid tearing or damaging the leaves, as this can lead to rotting or nutrient loss.

3. Regular Harvesting

To encourage continuous growth, regularly harvest the outer leaves of the kale plant. This allows the inner leaves to develop and ensures a longer harvesting period. When harvesting, leave a few leaves on the plant to sustain its growth.

4. Proper Storage

After harvesting, it’s crucial to store kale properly to maintain its freshness and nutritional value. Before storing, remove any damaged or yellowed leaves. Rinse the remaining leaves thoroughly and pat them dry with a clean towel or use a salad spinner. Place the kale leaves in a plastic bag or airtight container and store them in the refrigerator. Stored properly, kale can stay fresh for up to a week.

Common Kale Growing Problems And Solutions

While kale is generally a low-maintenance crop, it can encounter some growing problems. Here are a few common issues and their solutions:

1. Yellowing Of Leaves

Yellowing of kale leaves can be caused by nutrient deficiencies, pest infestation, or overwatering. To address this issue, ensure that the soil is well-drained and the plants are receiving adequate sunlight and water. Consider applying a balanced organic fertilizer to provide the necessary nutrients. If pests are the cause, take appropriate measures to control them.

2. Pests And Diseases

As mentioned earlier, kale can be prone to pests like aphids, cabbage worms, and flea beetles. To minimize damage from these pests, regularly inspect your plants for signs of infestation and take necessary action. Using organic insecticides or introducing beneficial insects can help control the pest population. For diseases such as powdery mildew or downy mildew, ensure good air circulation and consider applying organic fungicides if needed.

3. Bolting

Bolting refers to when kale plants prematurely produce flowers and go to seed. This can happen due to high temperatures or certain environmental factors. To prevent bolting, choose kale varieties that are more resistant to heat or grow them during cooler seasons. Alternatively, you can provide shade or use row covers to protect the plants from excessively high temperatures.

4. Poor Growth Or Stunted Plants

If your kale plants are not growing as expected or appear stunted, it could be due to poor soil quality or inadequate nutrition. Conduct a soil test to determine if any nutrients are lacking and amend the soil accordingly. Applying organic fertilizers rich in nitrogen and potassium can help promote healthy growth. Ensure that the plants are receiving sufficient sunlight and water as well.


Planting kale from seeds can be a rewarding experience, yielding a bountiful supply of nutritious leaves throughout the year. By following the steps outlined in this guide, you can ensure successful germination, healthy plant growth, and abundant harvests of this versatile and hardy vegetable. Remember to keep pests and diseases at bay through regular observation and care, prune and thin seedlings for optimal growth, and harvest and store kale properly to enjoy its freshness and nutritional benefits. With proper care and attention, you’ll be able to cultivate a thriving kale garden and enjoy the fruits of your labor.


How Do I Prepare The Soil For Planting Kale Seeds?

To prepare the soil for planting kale seeds, start by clearing the area of any debris or weeds. Then, loosen the soil to a depth of about 6 inches and mix in some compost or well-aged manure for added nutrients. Finally, level out the soil and water it thoroughly before sowing the seeds.

When Is The Best Time To Plant Kale Seeds?

The best time to plant kale seeds is in early spring, as soon as the soil can be worked. If you are planting in the fall, aim to plant the seeds 6-8 weeks before the first frost. Kale can tolerate some light frost and actually tastes sweeter after a frost.

How Deep Should I Plant The Kale Seeds?

Kale seeds should be planted about ¼ inch deep in the soil. If the seeds are planted too deep, they may have trouble germinating and breaking through the surface. Use your finger or a small tool to make a shallow trench for the seeds and then lightly cover them with soil.

How Much Space Should I Leave Between Each Kale Seed When Planting?

Plant the kale seeds about 6 inches apart to give them enough room to grow and develop a healthy root system. If you are planting multiple rows, leave about 12-18 inches of space between each row.

How Often Should I Water The Kale Seeds After Planting?

Once the seeds are planted, water the soil immediately to ensure it is evenly moist. After that, keep the soil consistently moist by watering every 1-2 days, depending on the weather. Avoid over-watering to prevent the seeds from rotting or developing fungal diseases.