When should I plant Grønnkål in Zone 9b?

Start Grønnkål seeds indoors around Jan 27. Transplant outdoors after Feb 10. Expect first harvest around Mar 27.

What is the last frost date for Zone 9b?

The average last spring frost date for Zone 9b is Mar 10. The first fall frost averages Nov 15, giving a 250-day growing season.

Can I grow Grønnkål in Zone 9b?

Yes. Grønnkål needs 60 days to harvest. Zone 9b has a 250-day growing season, which is sufficient.

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🥬 Growing Grønnkål in Zone 9b

Zone 9b has warm winters and an extended growing season -- excellent for heat-loving crops like Grønnkål. Siste frost: Mar 10. Første frost: Nov 15.

Planting Calendar

Indoor

Outdoor

Harvest

Jan 27Nov 15

Season: Mar 10 – Nov 15 (250 dager)

Sone9b

Siste frostMar 10

Første frostNov 15

Sesong250 dager

Høst60 dager

SolHalvskygge

When to Plant Grønnkål in Zone 9b

Start Seeds Indoors: Jan 27

Start Grønnkål seeds indoors around Jan 27 (6 uker før siste frost). Optimal germination temperature: 65F. Germinates in 5-10 days.

Transplant Outdoors: Feb 10

Transplant Grønnkål seedlings outdoors after Feb 10. Wait until soil temperature reaches 40F. Space plants at 1/m² (30cm avstand). Harden off plants for a week before moving outside.

Harvest: Mar 27

First harvest approximately Mar 27 (~45 dager from transplant). Continue harvesting until first frost (Nov 15). Grønnkål can overwinter in mild climates for continued harvest.

Fall Planting: Sep 20

For a fall harvest, plant Grønnkål around Sep 20 (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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