DibbleGrowing kohlrabi: from seed to harvest
Sow 4 weeks before last frost and again for fall. Harvest the swollen stem young, about tennis-ball size, for the sweetest crunch.
Planting dates for kohlrabi by zone
| Zone | Start seeds indoors | Sow or transplant | Harvest |
|---|---|---|---|
| Zone 3 | not needed | May 1 | June 25 |
| Zone 4 | not needed | April 26 | June 20 |
| Zone 5 | not needed | April 16 | June 10 |
| Zone 6 | not needed | April 7 | June 1 |
| Zone 7 | not needed | March 27 | May 21 |
| Zone 8 | not needed | March 14 | May 8 |
| Zone 9 | not needed | February 15 | April 11 |
| Zone 10 | not needed | January 17 | March 13 |
| Zone 11 | not needed | December 18 | February 11 |
These dates use typical frost dates for each zone. Dibble tunes them to your exact ZIP and lets you adjust frost dates for your own yard.
Companion plants
Good neighbors for Kohlrabi:
Better kept apart:
Family and rotation
Kohlrabi is in the brassicas family. Hungry leaf crops. Follow legumes; avoid following other brassicas. Learn about crop rotation.
Related crops
Kale
When to plantBroccoli
When to plantRadish
When to plantCabbage
When to plantCauliflower
When to plantBrussels Sprouts
When to plant
Questions
When should I plant kohlrabi?
It depends on your zone. Kohlrabi is a half-hardy crop, so the timing follows your last spring frost. Look up your zone in the table below for exact start, sow, and harvest dates, or open Dibble and enter your ZIP to get your own calendar.
How long does it take to grow kohlrabi?
About 55 days from sowing to the first harvest, with a picking window of roughly 14 days after that.
What grows well with kohlrabi?
Good companions include Onion, Beet. Keep it away from Tomato, Strawberry.
Plant at the right time this season
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