When should I plant Blomkål in Zone 1a?

Start Blomkål seeds indoors around Apr 13. Transplant outdoors after May 11. Expect first harvest around Jul 10.

What is the last frost date for Zone 1a?

The average last spring frost date for Zone 1a is May 25. The first fall frost averages Aug 28, giving a 95-day growing season.

Can I grow Blomkål in Zone 1a?

Yes. Blomkål needs 75 days to harvest. Zone 1a has a 95-day growing season, which is sufficient.

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🥦 Growing Blomkål in Zone 1a

Zone 1a has harsh winters and a short growing season. Start Blomkål early indoors to maximize your harvest window. Sidste frost: May 25. Første frost: Aug 28.

Planting Calendar

Indoor

Outdoor

Harvest

Apr 13Aug 28

Season: May 25 – Aug 28 (95 dage)

Zone1a

Sidste frostMay 25

Første frostAug 28

Sæson95 dage

Høst75 dage

SolFuld Sol

When to Plant Blomkål in Zone 1a

Start Seeds Indoors: Apr 13

Start Blomkål seeds indoors around Apr 13 (6 uger før sidste frost). Optimal germination temperature: 70F. Germinates in 5-10 days.

Transplant Outdoors: May 11

Transplant Blomkål seedlings outdoors after May 11. Wait until soil temperature reaches 50F. Space plants at 1/m² (30cm afstand). Harden off plants for a week before moving outside.

Harvest: Jul 10

First harvest approximately Jul 10 (~60 dage from transplant). Continue harvesting until first frost (Aug 28).

Fall Planting: Jun 5

For a fall harvest, plant Blomkål around Jun 5 (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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