When should I plant Grønnkål in Zone 9a?

Start Grønnkål 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 Grønnkål in Zone 9a?

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

🥬

🥬 Growing Grønnkål in Zone 9a

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

Planting Calendar

Indoor

Outdoor

Harvest

Feb 6Nov 12

Season: Mar 20 – Nov 12 (237 dager)

Sone9a

Siste frostMar 20

Første frostNov 12

Sesong237 dager

Høst60 dager

SolHalvskygge

When to Plant Grønnkål in Zone 9a

Start Seeds Indoors: Feb 6

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

Transplant Outdoors: Feb 20

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

Harvest: Apr 6

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

Fall Planting: Sep 17

For a fall harvest, plant Grønnkål around Sep 17 (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

Plan Your Garden Grønnkål

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

Start Free Grønnkål Growing Guide