When should I plant Kålrot in Zone 9b?

Direct sow Kålrot outdoors around Feb 17. Expect first harvest around Apr 3.

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.

Yes. Kålrot needs 45 days to harvest. Zone 9b has a 250-day growing season, which is sufficient. You can plant up to 9 successions.

⚪

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

Outdoor

Harvest

Feb 17Nov 15

Season: Mar 10 – Nov 15 (250 dager) · Succession: plant every 3 weeks (up to 9x)

Sone9b

Siste frostMar 10

Første frostNov 15

Sesong250 dager

Høst45 dager

SolFull Sol

Direct sow Kålrot seeds outdoors around Feb 17. Wait until soil temperature reaches 40F. Space plants at 9/m² (10cm avstand).

First harvest approximately Apr 3 (~45 dager from planting). Continue harvesting until first frost (Nov 15).

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

✅ Erter✅ Vikke

❌ Knoppurt❌ Sennepsblad

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

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