When should I plant Blomkål in Zone 5b?

Start Blomkål seeds indoors around Mar 17. Transplant outdoors after Apr 14. Expect first harvest around Jun 13.

What is the last frost date for Zone 5b?

The average last spring frost date for Zone 5b is Apr 28. The first fall frost averages Oct 8, giving a 163-day growing season.

Can I grow Blomkål in Zone 5b?

Yes. Blomkål needs 75 days to harvest. Zone 5b has a 163-day growing season, which is sufficient.

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🥦 Growing Blomkål in Zone 5b

Zone 5b has cold winters and a moderate growing season. Timing is key for Blomkål in this zone. Sidste frost: Apr 28. Første frost: Oct 8.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 17Oct 8

Season: Apr 28 – Oct 8 (163 dage)

Zone5b

Sidste frostApr 28

Første frostOct 8

Sæson163 dage

Høst75 dage

SolFuld Sol

When to Plant Blomkål in Zone 5b

Start Seeds Indoors: Mar 17

Start Blomkål seeds indoors around Mar 17 (6 uger før sidste frost). Optimal germination temperature: 70F. Germinates in 5-10 days.

Transplant Outdoors: Apr 14

Transplant Blomkål seedlings outdoors after Apr 14. Wait until soil temperature reaches 50F. Space plants at 1/m² (30cm afstand). Harden off plants for a week before moving outside.

Harvest: Jun 13

First harvest approximately Jun 13 (~60 dage from transplant). Continue harvesting until first frost (Oct 8).

Fall Planting: Jul 16

For a fall harvest, plant Blomkål around Jul 16 (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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