What To Know
- Kohlrabi bulbs can range in size from small (2-3 inches in diameter) to large (4-6 inches in diameter).
- Before transplanting outdoors, gradually acclimate seedlings to outdoor conditions by placing them in a protected area for a few hours each day.
- Slice kohlrabi thinly and eat it raw in salads, dips, or as a snack.
Kohlrabi, with its unique bulbous stem and delicate flavor, is a delightful addition to any garden. But how do you successfully grow this unusual vegetable? This guide will take you through the entire process, from choosing the right seed to harvesting your delicious kohlrabi.
Understanding Kohlrabi: A Quick Overview
Kohlrabi, a member of the Brassica family (like broccoli and cabbage), is a cool-season vegetable. Its edible part is actually a swollen stem, which can be enjoyed raw, cooked, or pickled. Kohlrabi comes in various colors, including green, purple, and white, each with slightly different flavor profiles.
Choosing the Right Kohlrabi Variety
The first step to successfully growing kohlrabi is selecting the right variety. Here are a few factors to consider:
- Maturity: Kohlrabi varieties range in their days to maturity, from early maturing (around 50 days) to later maturing (around 70 days). Choosing the right maturity will depend on your growing season and desired harvest time.
- Size: Kohlrabi bulbs can range in size from small (2-3 inches in diameter) to large (4-6 inches in diameter). Consider your preferred size and how you plan to use the kohlrabi.
- Color: The color of the kohlrabi doesn’t affect its flavor but can add visual interest to your garden. Green kohlrabi is the most common, followed by purple and white varieties.
Preparing Your Planting Site: A Step-by-Step Guide
Kohlrabi prefers well-drained soil with a pH of 6.0-6.8. Here’s how to prepare your planting site:
1. Soil Preparation: Work the soil to a depth of 12 inches, removing any weeds or debris.
2. Amendments: Incorporate compost or well-rotted manure into the soil to improve its fertility and drainage.
3. Sunlight: Kohlrabi needs at least 6 hours of direct sunlight per day. Choose a sunny spot in your garden.
Sowing Kohlrabi Seeds: The Basics
Kohlrabi can be sown directly in the garden or started indoors. Here’s a guide to sowing seeds:
Direct Sowing:
1. Timing: Sow seeds 2-3 weeks before the last frost date in your area.
2. Spacing: Space seeds 1-2 inches apart in rows that are 12-18 inches apart.
3. Depth: Sow seeds 1/4 inch deep.
4. Watering: Keep the soil consistently moist.
Starting Indoors:
1. Timing: Start seeds indoors 4-6 weeks before the last frost date.
2. Containers: Use seed starting trays or individual pots filled with seed starting mix.
3. Spacing: Sow 1-2 seeds per cell or pot.
4. Watering: Keep the soil moist, but not soggy.
5. Hardening Off: Before transplanting outdoors, gradually acclimate seedlings to outdoor conditions by placing them in a protected area for a few hours each day.
Transplanting Kohlrabi: A Gentle Touch
If you started your kohlrabi indoors, it’s time to transplant them to your garden. Here’s how:
1. Timing: Transplant seedlings once all danger of frost has passed and the soil has warmed to at least 50°F.
2. Spacing: Space seedlings 8-12 inches apart in rows that are 12-18 inches apart.
3. Watering: Water thoroughly after transplanting.
Caring for Your Kohlrabi Plants: A Guide to Success
Once your kohlrabi plants are established, they require minimal care. Here are the key elements:
- Watering: Keep the soil consistently moist, especially during dry periods.
- Fertilizing: A light application of fertilizer every 2-3 weeks will encourage healthy growth.
- Weeding: Remove any weeds that compete with your kohlrabi plants for nutrients and water.
- Pest Control: Keep an eye out for common pests like cabbage worms and aphids. Use organic methods like insecticidal soap or row covers to control pests.
Harvesting Your Kohlrabi: Timing is Everything
Kohlrabi is ready to harvest when the bulbs are firm and about 2-3 inches in diameter. Here’s how to harvest:
1. Timing: Harvest kohlrabi 60-80 days after sowing, depending on the variety.
2. Method: Cut the bulbs off at the base of the stem, leaving a small portion of the stem attached.
Enjoying Your Kohlrabi Harvest: From Kitchen to Table
Once you’ve harvested your kohlrabi, it’s time to enjoy its unique flavor. Here are a few ideas:
- Raw: Slice kohlrabi thinly and eat it raw in salads, dips, or as a snack.
- Cooked: Kohlrabi can be roasted, steamed, sautéed, or added to soups and stews.
- Pickled: Pickled kohlrabi is a tangy and crunchy treat.
Kohlrabi Growing: Beyond the Basics
For those looking to further enhance their kohlrabi growing experience, here are a few additional tips:
- Succession Planting: Plant kohlrabi seeds every 2-3 weeks to ensure a continuous harvest throughout the growing season.
- Companion Planting: Kohlrabi grows well with plants like carrots, onions, and lettuce.
- Mulching: Apply a layer of mulch around your kohlrabi plants to help retain moisture and suppress weeds.
The Final Word: Embracing the Joy of Kohlrabi
Growing kohlrabi is a rewarding experience that allows you to enjoy a unique and delicious vegetable. Follow these steps, and you’ll be well on your way to a bountiful harvest. Remember to experiment with different varieties, explore new recipes, and share your kohlrabi journey with others.
What People Want to Know
Q: Can I grow kohlrabi in containers?
A: Yes, kohlrabi can be grown successfully in containers. Choose a container that is at least 12 inches in diameter and 12 inches deep.
Q: How do I prevent kohlrabi from becoming woody?
A: Harvest kohlrabi when the bulbs are young and tender. Overly mature bulbs can become woody.
Q: Can I save kohlrabi seeds for next year?
A: Yes, you can save kohlrabi seeds. Allow the seed pods to mature on the plant and then collect the seeds.
Q: What are some common pests and diseases that affect kohlrabi?
A: Common pests include cabbage worms, aphids, and flea beetles. Diseases to watch out for include black rot and clubroot.
