To grow kohlrabi from seed, start by planting seeds ½ inch deep in well-drained soil. Ensure the plants receive full sun and water regularly.
Kohlrabi is a unique vegetable, often overlooked in gardens. Known for its bulbous stem and crunchy texture, it adds a delightful twist to salads and stir-fries. Growing kohlrabi from seed is a rewarding experience for both novice and seasoned gardeners.
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This cool-season crop thrives in spring and fall, making it versatile for various climates. Seeds germinate quickly, typically within a week, allowing for speedy growth. With proper care, you can enjoy fresh kohlrabi in about 60 to 70 days. Follow these steps to cultivate this nutritious and flavorful vegetable in your garden.
How to Grow Kohlrabi from Seed : Step by Step Guide
Introduction To Kohlrabi
Kohlrabi is a unique vegetable, often called a “cabbage turnip.” It belongs to the Brassica family. This plant has a round bulb that grows above the soil. Its taste is mild and crisp, similar to broccoli stems.
Kohlrabi is rich in vitamins and minerals. It provides a good source of fiber, which helps digestion. Eating kohlrabi can boost your immune system. It also contains antioxidants that fight free radicals.
Regular consumption may support heart health. The vegetable can help with weight management due to its low calorie content. Its high water content keeps you hydrated.
Choosing The Right Seeds
Choosing the right seeds is crucial for growing kohlrabi successfully. You can choose between hybrid and heirloom seeds.
Hybrid seeds are often more disease-resistant and may produce higher yields. They are bred for specific traits. Heirloom seeds are traditional varieties passed down through generations. They often have unique flavors and colors.
For home gardens, some of the best varieties include:
| Variety Name | Characteristics |
|---|---|
| White Vienna | Popular for its sweet taste and tender texture. |
| Purple Vienna | Known for its vibrant color and crunchy consistency. |
| Superschmelz | Grows large and has a mild flavor. |
Getting Started With Seedlings
Start with a well-draining soil mix for best results. A combination of potting soil, compost, and perlite works great. Ensure the mix is light and airy.
For sowing techniques, plant seeds about 1/2 inch deep. Space them 2-3 inches apart to allow for healthy growth. Water the soil gently to keep it moist.
Cover the seeds lightly with soil. Use a plastic cover or plastic wrap to maintain humidity. Check daily and remove the cover once seedlings appear.
Germination Process
The germination process for kohlrabi seeds is crucial. Temperature plays a big role. The ideal range is between 65°F to 75°F. Keeping humidity around 50% to 70% helps seeds sprout well.
Seeds usually take 7 to 14 days to germinate. After germination, ensure they get enough light. Too little light can cause weak plants. Consistent moisture is also important during this time.
| Factor | Ideal Range |
|---|---|
| Temperature | 65°F to 75°F |
| Humidity | 50% to 70% |
| Germination Time | 7 to 14 days |
Caring For Kohlrabi Seedlings
Watering is vital for healthy kohlrabi seedlings. Keep the soil moist but not soggy. Water once a week, or more in hot weather. Use a gentle spray to avoid disturbing seedlings.
Thinning out seedlings helps them grow better. Space them about 6 inches apart. This allows each plant to get enough sunlight and nutrients. Remove the weakest plants gently. Use scissors to avoid damage.
Transplanting To The Garden
Transplant kohlrabi seedlings when they are about 4-6 weeks old. This usually happens after the last frost. Ensure the soil temperature is at least 60°F (15°C). Plant them in the spring or fall for the best growth.
Soil should be well-drained and rich in nutrients. A pH level between 6.0 and 7.0 is ideal. Choose a sunny spot that gets at least 6 hours of sunlight daily. Good sunlight helps the plant grow strong and healthy.
| Soil Type | pH Level | Sunlight |
|---|---|---|
| Well-drained | 6.0 – 7.0 | 6+ hours daily |
Ongoing Care And Maintenance
Proper fertilization is key for healthy kohlrabi growth. Start by applying a balanced fertilizer every 4-6 weeks. Focus on a mix rich in nitrogen. This helps in leafy growth, which is important for kohlrabi.
Watch for common pests like aphids and cabbage worms. Use insecticidal soap to control them. Regularly inspect plants for any signs of disease, such as yellowing leaves.
Avoid overcrowding plants to prevent disease spread. Ensure good air circulation around the plants. This helps keep them healthy and strong.
Maintain a clean garden space by removing any debris. This reduces the risk of pests and diseases.
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Harvesting Your Kohlrabi
Check for maturity when the kohlrabi bulbs reach about 3 to 4 inches in diameter. The skin should be smooth and firm. You can also look for color changes. A light green or purple hue indicates readiness.
For harvesting, use a sharp knife. Cut the kohlrabi at the base, avoiding damage to nearby plants. Pull gently to remove the bulb from the soil. Harvest in the morning for the best taste.
After harvesting, store kohlrabi in a cool place. It stays fresh in the fridge for a week. Avoid washing until ready to use. This helps keep the flavor intact.
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Frequently Asked Questions
How Long Does It Take To Grow Kohlrabi From Seed?
Kohlrabi typically takes about 60 to 90 days to mature from seed. Depending on the variety and growing conditions, you can expect to harvest your kohlrabi within this timeframe. Ensure proper watering and sunlight to promote healthy growth.
What Is The Best Time To Plant Kohlrabi Seeds?
The best time to plant kohlrabi seeds is in early spring or late summer. This timing helps avoid extreme heat or frost, which can hinder growth. Aim for soil temperatures between 60°F and 75°F for optimal germination.
How Deep Should Kohlrabi Seeds Be Planted?
Kohlrabi seeds should be planted about ½ inch deep in well-draining soil. This depth allows for proper moisture retention and germination. Space seeds about 4 inches apart to give plants room to grow.
Do Kohlrabi Seeds Need Light To Germinate?
Kohlrabi seeds do not require light to germinate. Instead, they thrive in darkness while the soil remains moist. Once seedlings appear, provide ample sunlight for robust growth and healthy development.
Conclusion
Growing kohlrabi from seed is a rewarding experience. With proper care, you can enjoy this nutritious vegetable in your garden. Remember to provide adequate sunlight, water, and space for optimal growth. Embrace the process, and soon you’ll be harvesting fresh kohlrabi.
Happy gardening, and enjoy your delicious homegrown produce!
