When should I plant Blomkål in Zone 9a?

Start Blomkål seeds indoors around Feb 6. Transplant outdoors after Mar 6. Expect first harvest around May 5.

What is the last frost date for Zone 9a?

The average last spring frost date for Zone 9a is Mar 20. The first fall frost averages Nov 12, giving a 237-day growing season.

Can I grow Blomkål in Zone 9a?

Yes. Blomkål needs 75 days to harvest. Zone 9a has a 237-day growing season, which is sufficient.

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🥦 Growing Blomkål in Zone 9a

Zone 9a has warm winters and an extended growing season -- excellent for heat-loving crops like Blomkål. Sidste frost: Mar 20. Første frost: Nov 12.

Planting Calendar

Indoor

Outdoor

Harvest

Feb 6Nov 12

Season: Mar 20 – Nov 12 (237 dage)

Zone9a

Sidste frostMar 20

Første frostNov 12

Sæson237 dage

Høst75 dage

SolFuld Sol

When to Plant Blomkål in Zone 9a

Start Seeds Indoors: Feb 6

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

Transplant Outdoors: Mar 6

Transplant Blomkål seedlings outdoors after Mar 6. Wait until soil temperature reaches 50F. Space plants at 1/m² (30cm afstand). Harden off plants for a week before moving outside.

Harvest: May 5

First harvest approximately May 5 (~60 dage from transplant). Continue harvesting until first frost (Nov 12).

Fall Planting: Aug 20

For a fall harvest, plant Blomkål around Aug 20 (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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