Kohlrabi Container Gardening: Ever dreamt of harvesting crisp, slightly sweet kohlrabi right from your own patio? I know I have! Forget sprawling gardens and endless weeding; this guide unlocks the secrets to successfully growing this unique vegetable in containers, no matter how small your space.
Kohlrabi, sometimes called a German turnip, has a fascinating history. Originating in Northern Europe, it’s been a staple in various cuisines for centuries. Its name literally translates to “cabbage turnip,” hinting at its delicious blend of flavors. But you don’t need a sprawling European farm to enjoy this delightful vegetable.
In today’s busy world, many of us crave fresh, homegrown produce but lack the time or space for traditional gardening. That’s where kohlrabi container gardening comes in! This DIY guide will walk you through every step, from selecting the right container and soil to nurturing your kohlrabi plants for a bountiful harvest. Imagine the satisfaction of adding freshly harvested kohlrabi to your salads, stir-fries, or even enjoying it raw as a crunchy snack. Let’s get started and transform your balcony or patio into a thriving kohlrabi haven!
Kohlrabi Container Gardening: A Beginner’s Guide
Hey there, fellow gardening enthusiasts! Ever thought about growing kohlrabi but don’t have a sprawling garden? No problem! Container gardening is your answer. I’m going to walk you through everything you need to know to successfully grow kohlrabi in containers, from choosing the right pot to harvesting your delicious, bulbous veggies. Let’s get our hands dirty!
Choosing the Right Container and Soil
Before we even think about seeds, we need to set the stage for success. This means picking the perfect container and filling it with the right soil.
* Container Size: Kohlrabi needs room to grow, especially its bulb. I recommend a container that’s at least 12 inches in diameter and 12 inches deep. A 5-gallon bucket works great, or even a large, decorative pot. The bigger, the better, really!
* Drainage: This is crucial! Kohlrabi hates soggy feet. Make sure your container has plenty of drainage holes. If not, you can drill some yourself.
* Material: Plastic, terracotta, ceramic – it’s all good! Just keep in mind that terracotta pots dry out faster, so you’ll need to water more frequently. Dark-colored containers can also heat up more in direct sunlight, which isn’t ideal.
* Soil: Forget garden soil! It’s too heavy and doesn’t drain well in containers. You need a good quality potting mix. I like to use a mix of peat moss, perlite, and vermiculite. You can also buy pre-mixed potting soil specifically designed for vegetables.
Planting Your Kohlrabi
Alright, now for the fun part – getting those seeds in the ground (or rather, in the pot!).
1. Start with Seeds or Transplants: You can start kohlrabi from seeds indoors about 4-6 weeks before the last expected frost, or you can buy transplants from your local nursery. I’ve done both, and honestly, transplants are easier if you’re a beginner.
2. Sowing Seeds: If you’re starting from seeds, fill your container with potting mix, leaving about an inch of space at the top. Moisten the soil thoroughly. Sow the seeds about ¼ inch deep and 1 inch apart. Gently cover them with soil and water again.
3. Transplanting Seedlings: If you’re using transplants, dig a hole in the potting mix large enough to accommodate the root ball. Gently remove the seedling from its container and loosen the roots a bit. Place the seedling in the hole and backfill with soil, gently firming it around the base.
4. Spacing: Whether you’re using seeds or transplants, aim for about 4-6 inches of spacing between plants. If you’re using a smaller container, you might only be able to grow one kohlrabi plant.
5. Watering: Water thoroughly after planting. The soil should be moist but not soggy.
Caring for Your Kohlrabi Plants
Now that your kohlrabi is planted, it’s time to nurture it and help it thrive.
* Sunlight: Kohlrabi needs at least 6 hours of sunlight per day. Place your container in a sunny spot in your yard or on your balcony. If you don’t have enough sunlight, you can supplement with grow lights.
* Watering: Kohlrabi needs consistent moisture. Water deeply whenever the top inch of soil feels dry to the touch. Avoid overwatering, as this can lead to root rot. I usually check the soil moisture every day, especially during hot weather.
* Fertilizing: Kohlrabi is a heavy feeder, so you’ll need to fertilize it regularly. Use a balanced fertilizer (like 10-10-10) every 2-3 weeks. You can also use a liquid fertilizer, following the instructions on the label. I prefer using a slow-release fertilizer at planting time, followed by liquid fertilizer every few weeks.
* Weeding: Keep your container free of weeds. Weeds compete with your kohlrabi for nutrients and water. Hand-pull any weeds that pop up.
* Pest Control: Kohlrabi can be susceptible to pests like aphids, cabbage worms, and flea beetles. Inspect your plants regularly for signs of pests. You can control aphids with a strong spray of water or insecticidal soap. Cabbage worms can be hand-picked or treated with Bacillus thuringiensis (Bt). Flea beetles can be controlled with row covers or insecticidal soap. I’ve found that neem oil is a great all-around pest control solution.
* Bolting: Bolting is when the plant prematurely flowers and goes to seed. This can happen if the weather gets too hot or if the plant is stressed. To prevent bolting, keep your kohlrabi well-watered and fertilized, and provide shade during the hottest part of the day. Choose bolt-resistant varieties if you live in a warm climate.
Harvesting Your Kohlrabi
The moment we’ve all been waiting for – harvesting our delicious kohlrabi!
1. Timing is Key: Kohlrabi is best harvested when the bulb is about 2-3 inches in diameter. If you let it grow too large, it can become tough and woody. Check the seed packet or transplant label for the expected maturity date.
2. How to Harvest: To harvest, simply cut the bulb from the stem with a sharp knife. Leave about an inch of stem attached.
3. Leafy Greens: Don’t throw away the leaves! Kohlrabi leaves are edible and delicious. You can cook them like spinach or kale. Harvest the leaves when they are young and tender.
4. Storage: Kohlrabi can be stored in the refrigerator for several weeks. Remove the leaves before storing.
Troubleshooting Common Problems
Even with the best care, you might encounter some problems along the way. Here are a few common issues and how to fix them:
* Yellowing Leaves: This could be a sign of overwatering, underwatering, or nutrient deficiency. Check the soil moisture and adjust your watering accordingly. Fertilize your plants with a balanced fertilizer.
* Stunted Growth: This could be caused by poor soil, lack of sunlight, or pests. Make sure your plants are getting enough sunlight and are planted in a good quality potting mix. Check for pests and treat them accordingly.
* Cracked Bulbs: This is usually caused by inconsistent watering. Make sure you’re watering your plants regularly and deeply.
* Woody Bulbs: This is usually caused by harvesting the kohlrabi too late. Harvest the bulbs when they are 2-3 inches in diameter.
Choosing the Right Kohlrabi Variety
There are many different varieties of kohlrabi to choose from, each with its own unique characteristics. Here are a few popular varieties:
* Early White Vienna: This is a classic variety that produces white bulbs. It’s early maturing and has a mild flavor.
* Early Purple Vienna: Similar to Early White Vienna, but with purple bulbs. It has a slightly sweeter flavor.
* Grand Duke: This is a hybrid variety that produces large, uniform bulbs. It’s resistant to bolting and has a good shelf life.
* Kossak: This is a giant variety that can produce bulbs up to 10 pounds! It’s best suited for experienced gardeners.
* White Delicacy: This variety is known for its tender, mild-flavored bulbs. It’s a good choice for salads and raw eating.
Extending Your Kohlrabi Season
Want to enjoy fresh kohlrabi for as long as possible? Here are a few tips for extending your growing season:
* Succession Planting: Plant a new batch of kohlrabi seeds every 2-3 weeks. This will ensure a continuous harvest throughout the season.
* Cold Frames: Use a cold frame to protect your kohlrabi plants from frost in the fall. This will allow you to extend your harvest into the winter.
* Row Covers: Use row covers to protect your plants from pests and frost.
* Choose Early Maturing Varieties: Select varieties that mature quickly, especially for late-season plantings.
Kohlrabi Recipes to Try
Now that you’ve harvested your kohlrabi, it’s time to enjoy it! Here are a few delicious recipes to try:
* Kohlrabi Slaw: Shredded kohlrabi, carrots, and cabbage tossed in a creamy dressing.
* Roasted Kohlrabi: Cubed kohlrabi roasted with olive oil, salt, and pepper.
* Kohlrabi Fries: Kohlrabi cut into fries and baked or fried.
* Kohlrabi Soup: A creamy soup made with kohlrabi, potatoes, and onions.
* Kohlrabi and
Conclusion
So, there you have it! Growing kohlrabi in containers isn’t just possible; it’s surprisingly rewarding. We’ve walked through the steps, from selecting the right container and soil to nurturing your kohlrabi plants to a bountiful harvest. But why should you bother with this DIY project? Because it unlocks a world of fresh, homegrown flavor, even if you’re limited by space. Imagine stepping onto your balcony or patio and harvesting crisp, slightly sweet kohlrabi bulbs, ready to be enjoyed in salads, slaws, or roasted as a delicious side dish.
This method of kohlrabi container gardening offers unparalleled control over your plant’s environment. You can easily move your containers to chase the sun, protect them from harsh weather, and ensure they receive the perfect amount of water and nutrients. Plus, it’s incredibly satisfying to watch your plants thrive under your care, knowing you’ve played an active role in bringing fresh produce to your table.
Don’t be afraid to experiment! Try different kohlrabi varieties to find your favorite. ‘Early White Vienna’ is a classic choice, but ‘Purple Vienna’ adds a pop of color to your garden and your plate. For a milder flavor, consider ‘Superschmelz,’ known for its large, tender bulbs. You can also companion plant with herbs like dill or chamomile to attract beneficial insects and deter pests. Consider adding marigolds around the base of your kohlrabi plants to help deter nematodes and other soil pests.
And the fun doesn’t stop at the harvest! Get creative with your kohlrabi. Thinly slice it and add it to salads for a refreshing crunch. Roast it with other root vegetables for a hearty winter meal. Or, try pickling it for a tangy condiment. The possibilities are endless!
We wholeheartedly encourage you to give kohlrabi container gardening a try. It’s a fantastic way to connect with nature, enjoy fresh, healthy food, and add a touch of green to your living space. Don’t be intimidated if you’re a beginner; the steps are straightforward, and the rewards are well worth the effort.
Once you’ve embarked on your kohlrabi container gardening adventure, we’d love to hear about your experience! Share your tips, tricks, and photos in the comments below. Let’s build a community of container gardening enthusiasts and inspire others to grow their own food, no matter how small their space may be. What varieties did you try? What challenges did you face, and how did you overcome them? Your insights could be invaluable to other aspiring gardeners. Happy growing!
Frequently Asked Questions (FAQ)
What is the best size container for growing kohlrabi?
The ideal container size for growing kohlrabi is at least 12 inches in diameter and 12 inches deep. This provides enough space for the roots to develop properly and supports healthy bulb growth. While you might get away with a slightly smaller container, you risk stunting the plant’s growth and reducing your harvest. Remember, kohlrabi needs room to expand its bulb underground. A larger container also helps retain moisture, which is crucial for kohlrabi’s development. If you’re planning on growing multiple kohlrabi plants in one container, opt for a larger size, ensuring each plant has adequate space.
What type of soil is best for kohlrabi container gardening?
Kohlrabi thrives in well-draining, fertile soil that is rich in organic matter. A good potting mix specifically formulated for vegetables is an excellent choice. You can also create your own mix by combining equal parts of compost, peat moss (or coconut coir), and perlite or vermiculite. The compost provides essential nutrients, the peat moss or coconut coir helps retain moisture, and the perlite or vermiculite improves drainage. Avoid using garden soil in containers, as it can become compacted and hinder root growth. The ideal soil pH for kohlrabi is between 6.0 and 7.5. You can test your soil’s pH using a home testing kit and amend it accordingly with lime to raise the pH or sulfur to lower it.
How often should I water my container-grown kohlrabi?
Kohlrabi needs consistent moisture to produce plump, juicy bulbs. Water your plants deeply whenever the top inch of soil feels dry to the touch. The frequency of watering will depend on the weather, the size of your container, and the type of soil you’re using. During hot, dry periods, you may need to water daily. Avoid overwatering, as this can lead to root rot. Ensure your container has drainage holes to allow excess water to escape. A good way to check if your kohlrabi needs watering is to stick your finger into the soil about an inch deep. If it feels dry, it’s time to water.
How much sunlight does kohlrabi need?
Kohlrabi requires at least 6 hours of direct sunlight per day to thrive. Choose a location for your containers that receives ample sunlight. If you live in a particularly hot climate, some afternoon shade can be beneficial to prevent the plants from overheating. If you don’t have a sunny spot, you can supplement with grow lights. Rotate your containers regularly to ensure all sides of the plants receive adequate sunlight. Insufficient sunlight can result in leggy growth and smaller bulbs.
When is the best time to harvest kohlrabi?
Kohlrabi is typically ready to harvest 50-60 days after planting. The ideal size for harvesting is when the bulbs are about 2-3 inches in diameter. Harvesting at this size ensures the bulbs are tender and flavorful. Larger bulbs can become tough and woody. To harvest, simply cut the bulb from the stem just above the soil line. You can also harvest the leaves, which are edible and can be used like spinach or kale. Regular harvesting encourages continued production. Don’t wait too long to harvest, as the bulbs can become overgrown and lose their flavor.
What are some common pests and diseases that affect kohlrabi, and how can I prevent them?
Common pests that affect kohlrabi include aphids, cabbage worms, and flea beetles. Diseases include clubroot and downy mildew. To prevent pests, inspect your plants regularly and remove any pests you find by hand. You can also use insecticidal soap or neem oil to control infestations. To prevent diseases, ensure good air circulation around your plants and avoid overwatering. Rotate your crops each year to prevent soilborne diseases from building up. Consider using row covers to protect your plants from pests. Companion planting with herbs like rosemary and thyme can also help deter pests.
Can I grow kohlrabi in containers during the winter?
In milder climates, you can grow kohlrabi in containers during the winter. However, in colder climates, you may need to provide protection from frost. You can move your containers indoors or cover them with a frost blanket. Kohlrabi is relatively cold-tolerant, but prolonged exposure to freezing temperatures can damage the plants. Choose a variety that is known for its cold hardiness. Ensure your plants receive adequate sunlight, even during the winter months. Reduce watering frequency during the winter, as the plants will not be growing as actively.
How do I fertilize my container-grown kohlrabi?
Kohlrabi is a heavy feeder and benefits from regular fertilization. Use a balanced fertilizer, such as 10-10-10, every 2-3 weeks. You can also use a liquid fertilizer, such as fish emulsion or seaweed extract, to provide a boost of nutrients. Avoid over-fertilizing, as this can lead to excessive foliage growth and smaller bulbs. Follow the instructions on the fertilizer label carefully. Side-dressing with compost or well-rotted manure can also provide a slow-release source of nutrients.
Can I grow kohlrabi from seed in containers?
Yes, you can easily grow kohlrabi from seed in containers. Start seeds indoors 4-6 weeks before the last expected frost. Sow seeds ¼ inch deep in seed starting mix. Keep the soil moist and warm. Once the seedlings have developed a few true leaves, transplant them into your containers. You can also direct sow seeds into your containers after the last frost. Thin the seedlings to one plant per container. Starting seeds indoors gives you a head start on the growing season.
What are some good companion plants for kohlrabi in containers?
Good companion plants for kohlrabi include dill, chamomile, rosemary, thyme, and marigolds. Dill and chamomile attract beneficial insects that prey on pests. Rosemary and thyme deter pests. Marigolds help deter nematodes and other soil pests. Avoid planting kohlrabi near other members of the brassica family, such as broccoli, cabbage, and cauliflower, as they can compete for nutrients and attract the same pests. Companion planting can help create a healthier and more productive container garden.
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