When should I plant Grønkål in Zone 5b?

Start Grønkål seeds indoors around Mar 17. Transplant outdoors after Mar 31. Expect first harvest around May 15.

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 Grønkål in Zone 5b?

Yes. Grønkål needs 60 days to harvest. Zone 5b has a 163-day growing season, which is sufficient.

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🥬 Growing Grønkål in Zone 5b

Zone 5b has cold winters and a moderate growing season. Timing is key for Grønkål 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

Høst60 dage

SolHalvskygge

When to Plant Grønkål in Zone 5b

Start Seeds Indoors: Mar 17

Start Grønkål seeds indoors around Mar 17 (6 uger før sidste frost). Optimal germination temperature: 65F. Germinates in 5-10 days.

Transplant Outdoors: Mar 31

Transplant Grønkål seedlings outdoors after Mar 31. Wait until soil temperature reaches 40F. Space plants at 1/m² (30cm afstand). Harden off plants for a week before moving outside.

Harvest: May 15

First harvest approximately May 15 (~45 dage from transplant). Continue harvesting until first frost (Oct 8). Grønkål can overwinter in mild climates for continued harvest.

Fall Planting: Aug 13

For a fall harvest, plant Grønkål around Aug 13 (8 weeks before first frost).

Samdyrkning

✅ Salvie ✅ Dild✅ Løg✅ Rødbeder✅ Kartofler

❌ Jordbær

Grønkål 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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