When should I plant Blomkål in Zone 9b?

Start Blomkål seeds indoors around Jan 27. Transplant outdoors after Feb 24. Expect first harvest around Apr 25.

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 Blomkål in Zone 9b?

Yes. Blomkål needs 75 days to harvest. Zone 9b has a 250-day growing season, which is sufficient.

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🥦 Growing Blomkål in Zone 9b

Zone 9b has warm winters and an extended growing season -- excellent for heat-loving crops like Blomkål. Sidste frost: Mar 10. Første frost: Nov 15.

Planting Calendar

Indoor

Outdoor

Harvest

Jan 27Nov 15

Season: Mar 10 – Nov 15 (250 dage)

Zone9b

Sidste frostMar 10

Første frostNov 15

Sæson250 dage

Høst75 dage

SolFuld Sol

When to Plant Blomkål in Zone 9b

Start Seeds Indoors: Jan 27

Start Blomkål seeds indoors around Jan 27 (6 uger før sidste frost). Optimal germination temperature: 70F. Germinates in 5-10 days.

Transplant Outdoors: Feb 24

Transplant Blomkål seedlings outdoors after Feb 24. Wait until soil temperature reaches 50F. Space plants at 1/m² (30cm afstand). Harden off plants for a week before moving outside.

Harvest: Apr 25

First harvest approximately Apr 25 (~60 dage from transplant). Continue harvesting until first frost (Nov 15).

Fall Planting: Aug 23

For a fall harvest, plant Blomkål around Aug 23 (12 weeks before first frost).

Samdyrkning

✅ Spinat ✅ Selleri ✅ Timian✅ Bønner

❌ Tomater❌ Jordbær❌ Ærter

Blomkål 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

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

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