Kohlrabi Growing Guide

Active step 1/4

Day 0/10

1. 1

   Soak Seeds

   Day 0

   Soak kohlrabi seeds in cool water for 4-6 hours. As a brassica, they germinate reliably and quickly. Drain and rinse before sowing.

   Done

   • Kohlrabi seeds swell visibly after soaking — a sign they are ready to sow
   • Use filtered or room-temperature water for best results
2. 2

   Sow and Blackout

   Day 2

   Spread seeds in a dense, even layer on pre-moistened medium. Cover with a blackout dome for 3-4 days. Kohlrabi germinates quickly and vigorously.

   Done

   • Press seeds lightly into the medium to ensure good contact
   • Purple kohlrabi varieties develop striking violet stems during this phase
3. 3

   Introduce Light

   Day 5

   Once seedlings have pushed up to about 3 cm, expose to 12-16 hours of grow light. The purple coloration in stems intensifies under light.

   Done

   • More light = deeper purple color in purple varieties
   • Water consistently to support rapid growth
4. 4

   Harvest

   Day 10

   Harvest at 5-8 cm when cotyledons are fully open and vibrant. Kohlrabi microgreens have a satisfying crunch and mild brassica sweetness.

   Done

   • Harvest just before first true leaves for the best texture and flavor
   • Excellent in slaws, grain bowls, sandwiches, and stir-fries