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For gardeners and farmers who love kohlrabi, understanding the best times to plant and harvest is essential. A seasonal growing calendar helps ensure a successful crop by aligning planting activities with optimal weather conditions throughout the year.
Understanding Kohlrabi Growth Cycles
Kohlrabi is a cool-season vegetable that thrives in moderate temperatures. It belongs to the Brassica family, which also includes cabbage and broccoli. Proper timing is crucial because extreme heat can cause the plant to bolt or develop poor flavor.
Planting Seasons for Different Climates
The ideal planting time for kohlrabi varies based on your climate zone. Generally, it is best to plant in early spring or late summer for a fall harvest. Here is a basic guide:
- Temperate Climates: Sow seeds from March to May and again from August to September.
- Cooler Climates: Plant in early spring (April) and late summer (August).
- Warmer Climates: Use season extension techniques to plant in late fall or winter.
Monthly Growing Calendar
Below is a month-by-month guide for growing kohlrabi in most temperate zones:
January – February
Start planning your garden. You can begin indoor seed starting in February if the weather is still cold.
March – April
Direct sow seeds outdoors once the soil warms up. Thin seedlings to ensure proper growth space. Harvest begins in late spring.
May – June
Continue planting for successive crops. Keep soil moist and provide adequate spacing. Harvest early varieties in June.
July – August
In warmer regions, plant a fall crop in August. Use shade cloths if necessary to protect young plants from heat stress.
September – October
This is the prime harvesting period in many zones. Regularly check for readiness and enjoy fresh kohlrabi throughout fall.
November – December
In colder climates, harvest should be completed by November. Prepare beds for winter or start planning for next year’s crop.
Tips for a Successful Kohlrabi Crop
- Use well-draining, fertile soil rich in organic matter.
- Maintain consistent moisture levels.
- Thin seedlings to prevent overcrowding.
- Protect young plants from pests like aphids and cabbage worms.
- Harvest when bulbs are 3-4 inches in diameter for the best flavor.