When should I plant Grönkål in Zone 9a?

Start Grönkål seeds indoors around Feb 6. Transplant outdoors after Feb 20. Expect first harvest around Apr 6.

What is the last frost date for Zone 9a?

The average last spring frost date for Zone 9a is Mar 20. The first fall frost averages Nov 12, giving a 237-day growing season.

Can I grow Grönkål in Zone 9a?

Yes. Grönkål needs 60 days to harvest. Zone 9a has a 237-day growing season, which is sufficient.

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🥬 Growing Grönkål in Zone 9a

Zone 9a has warm winters and an extended growing season -- excellent for heat-loving crops like Grönkål. Sista frost: Mar 20. Första frost: Nov 12.

Planting Calendar

Indoor

Outdoor

Harvest

Feb 6Nov 12

Season: Mar 20 – Nov 12 (237 dagar)

Zon9a

Sista frostMar 20

Första frostNov 12

Säsong237 dagar

Skörd60 dagar

SolHalvskugga

When to Plant Grönkål in Zone 9a

Start Seeds Indoors: Feb 6

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

Transplant Outdoors: Feb 20

Transplant Grönkål seedlings outdoors after Feb 20. Wait until soil temperature reaches 40F. Space plants at 1/m² (30cm avstånd). Harden off plants for a week before moving outside.

Harvest: Apr 6

First harvest approximately Apr 6 (~45 dagar from transplant). Continue harvesting until first frost (Nov 12). Grönkål can overwinter in mild climates for continued harvest.

Fall Planting: Sep 17

For a fall harvest, plant Grönkål around Sep 17 (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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