When should I plant Grönkål in Zone 9b?

Start Grönkål 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 Grönkål in Zone 9b?

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

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🥬 Growing Grönkål in Zone 9b

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

Planting Calendar

Indoor

Outdoor

Harvest

Jan 27Nov 15

Season: Mar 10 – Nov 15 (250 dagar)

Zon9b

Sista frostMar 10

Första frostNov 15

Säsong250 dagar

Skörd60 dagar

SolHalvskugga

When to Plant Grönkål in Zone 9b

Start Seeds Indoors: Jan 27

Start Grönkål seeds indoors around Jan 27 (6 veckor före sista frosten). Optimal germination temperature: 65F. Germinates in 5-10 days.

Transplant Outdoors: Feb 10

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

Harvest: Mar 27

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

Fall Planting: Sep 20

For a fall harvest, plant Grönkål around Sep 20 (8 weeks before first frost).

Samplantering

✅ Salvia ✅ Dill✅ Lökar✅ Rödbetor✅ Potatisar

❌ Jordgubbar

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

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