When should I plant Grønnkål in Zone 6b?

Start Grønnkål seeds indoors around Mar 4. Transplant outdoors after Mar 18. Expect first harvest around May 2.

What is the last frost date for Zone 6b?

The average last spring frost date for Zone 6b is Apr 15. The first fall frost averages Oct 22, giving a 190-day growing season.

Can I grow Grønnkål in Zone 6b?

Yes. Grønnkål needs 60 days to harvest. Zone 6b has a 190-day growing season, which is sufficient.

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🥬 Growing Grønnkål in Zone 6b

Zone 6b has mild winters and a long growing season -- good conditions for Grønnkål. Siste frost: Apr 15. Første frost: Oct 22.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 4Oct 22

Season: Apr 15 – Oct 22 (190 dager)

Sone6b

Siste frostApr 15

Første frostOct 22

Sesong190 dager

Høst60 dager

SolHalvskygge

When to Plant Grønnkål in Zone 6b

Start Seeds Indoors: Mar 4

Start Grønnkål seeds indoors around Mar 4 (6 uker før siste frost). Optimal germination temperature: 65F. Germinates in 5-10 days.

Transplant Outdoors: Mar 18

Transplant Grønnkål seedlings outdoors after Mar 18. Wait until soil temperature reaches 40F. Space plants at 1/m² (30cm avstand). Harden off plants for a week before moving outside.

Harvest: May 2

First harvest approximately May 2 (~45 dager from transplant). Continue harvesting until first frost (Oct 22). Grønnkål can overwinter in mild climates for continued harvest.

Fall Planting: Aug 27

For a fall harvest, plant Grønnkål around Aug 27 (8 weeks before first frost).

Samdyrking

✅ Salvie ✅ Dill✅ Løk✅ Rødbeter✅ Poteter

❌ Jordbær

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

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