When should I plant Purple Kohlrabi in Zone 9b?

Start Purple Kohlrabi seeds indoors around Jan 27. Transplant outdoors after Feb 17. Expect first harvest around Mar 29.

What is the last frost date for Zone 9b?

The average last spring frost date for Zone 9b is Mar 10. The first fall frost averages Nov 15, giving a 250-day growing season.

Can I grow Purple Kohlrabi in Zone 9b?

Yes. Purple Kohlrabi needs 55 days to harvest. Zone 9b has a 250-day growing season, which is sufficient. You can plant up to 9 successions.

Growing Purple Kohlrabi in Zone 9b

Zone 9b has warm winters and an extended growing season -- excellent for heat-loving crops like Purple Kohlrabi. Posledný mráz: Mar 10. Prvý mráz: Nov 15.

Planting Calendar

Indoor

Outdoor

Harvest

Jan 27Nov 15

Season: Mar 10 – Nov 15 (250 dní) · Succession: plant every 3 weeks (up to 9x)

Zóna9b

Posledný mrázMar 10

Prvý mrázNov 15

Sezóna250 dní

Úroda55 dní

SlnkoPlné Slnko

When to Plant Purple Kohlrabi in Zone 9b

Start Seeds Indoors: Jan 27

Start Purple Kohlrabi seeds indoors around Jan 27 (6 týždňov pred posledným mrazom). Optimal germination temperature: 65F. Germinates in 5-10 days.

Transplant Outdoors: Feb 17

Transplant Purple Kohlrabi seedlings outdoors after Feb 17. Wait until soil temperature reaches 45F. Space plants at 4/m² (15cm rozostup). Harden off plants for a week before moving outside.

Harvest: Mar 29

First harvest approximately Mar 29 (~40 dní from transplant). Continue harvesting until first frost (Nov 15).

Fall Planting: Sep 20

For a fall harvest, plant Purple Kohlrabi around Sep 20 (8 weeks before first frost).

Purple Kohlrabi in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

Plan Your Garden Purple Kohlrabi

Track Purple Kohlrabi from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

Start Free Purple Kohlrabi Growing Guide