DibbleGrowing kohlrabi: from seed to harvest
Sow in the cool part of the year, then again as the heat fades for an autumn crop. 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 | April 19 | June 11 |
| Zone 4 | not needed | April 11 | June 3 |
| Zone 5 | not needed | April 4 | May 26 |
| Zone 6 | not needed | March 24 | May 19 |
| Zone 7 | not needed | March 3 | May 2 |
| Zone 8 | not needed | January 8 | March 26 |
| Zone 9 | not needed | September 14 | February 25 |
| Zone 10 | not needed | September 10 | February 25 |
| Zone 11 | not needed | November 9 | February 25 |
Each date is the start of the best window from the same climate engine the Dibble app uses, run at typical places in each zone. Dibble tunes them to your garden's own location 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 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 set where your garden is 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
Dibble builds your calendar in under a minute. Free to start, no account needed.