When should I plant Purple Kohlrabi in Zone 8a?

Start Purple Kohlrabi seeds indoors around Feb 22. Transplant outdoors after Mar 15. Expect first harvest around Apr 24.

What is the last frost date for Zone 8a?

The average last spring frost date for Zone 8a is Apr 5. The first fall frost averages Oct 28, giving a 206-day growing season.

Can I grow Purple Kohlrabi in Zone 8a?

Yes. Purple Kohlrabi needs 55 days to harvest. Zone 8a has a 206-day growing season, which is sufficient. You can plant up to 7 successions.

Growing Purple Kohlrabi in Zone 8a

Zone 8a has warm winters and an extended growing season — excellent for heat-loving crops like Purple Kohlrabi. Last frost: Apr 5. First frost: Oct 28.

Planting Calendar

Indoor

Outdoor

Harvest

Feb 22Oct 28

Season: Apr 5 – Oct 28 (206 days) · Succession: plant every 3 weeks (up to 7x)

Zone8a

Last FrostApr 5

First FrostOct 28

Season Length206 days

Days to Harvest55

SunFull Sun

Frost ToleranceModerate

Spacing4/sqft (6" apart)

When to Plant Purple Kohlrabi in Zone 8a

Start Seeds Indoors: Feb 22

Start Purple Kohlrabi seeds indoors around Feb 22 (6 weeks before last frost). Optimal germination temperature: 65°F. Germinates in 5–10 days.

Transplant Outdoors: Mar 15

Transplant Purple Kohlrabi seedlings outdoors after Mar 15. 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 24

First harvest approximately Apr 24 (~40 days from transplant). Continue harvesting until first frost (Oct 28).

Fall Planting: Sep 2

For a fall harvest, plant Purple Kohlrabi around Sep 2 (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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