When should I plant Purple Kohlrabi in Zone 7b?

Start Purple Kohlrabi seeds indoors around Feb 27. Transplant outdoors after Mar 20. Expect first harvest around Apr 29.

What is the last frost date for Zone 7b?

The average last spring frost date for Zone 7b is Apr 10. The first fall frost averages Nov 7, giving a 211-day growing season.

Can I grow Purple Kohlrabi in Zone 7b?

Yes. Purple Kohlrabi needs 55 days to harvest. Zone 7b has a 211-day growing season, which is sufficient. You can plant up to 7 successions.

Growing Purple Kohlrabi in Zone 7b

Zone 7b has mild winters and a long growing season — good conditions for Purple Kohlrabi. Last frost: Apr 10. First frost: Nov 7.

Planting Calendar

Indoor

Outdoor

Harvest

Feb 27Nov 7

Season: Apr 10 – Nov 7 (211 days) · Succession: plant every 3 weeks (up to 7x)

Zone7b

Last FrostApr 10

First FrostNov 7

Season Length211 days

Days to Harvest55

SunFull Sun

Frost ToleranceModerate

Spacing4/sqft (6" apart)

When to Plant Purple Kohlrabi in Zone 7b

Start Seeds Indoors: Feb 27

Start Purple Kohlrabi seeds indoors around Feb 27 (6 weeks before last frost). Optimal germination temperature: 65°F. Germinates in 5–10 days.

Transplant Outdoors: Mar 20

Transplant Purple Kohlrabi seedlings outdoors after Mar 20. Wait until soil temperature reaches 45°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.

Harvest: Apr 29

First harvest approximately Apr 29 (~40 days from transplant). Continue harvesting until first frost (Nov 7).

Fall Planting: Sep 12

For a fall harvest, plant Purple Kohlrabi around Sep 12 (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 Purple Kohlrabi Garden

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

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