When should I plant Ui in Zone 10b?

Start Ui seeds indoors around Nov 19. Transplant outdoors after Dec 31. Expect first harvest around Mar 21.

What is the last frost date for Zone 10b?

The average last spring frost date for Zone 10b is Jan 28. The first fall frost averages Dec 22, giving a 328-day growing season.

Can I grow Ui in Zone 10b?

Yes. Ui needs 110 days to harvest. Zone 10b has a 328-day growing season, which is sufficient.

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🧅 Kweken van Ui in Zone 10b

Zone 10b has a year-round growing season. Ui can be planted almost any time with proper planning. Laatste vorst: Jan 28. Eerste vorst: Dec 22.

Planting Calendar

Indoor

Outdoor

Harvest

Nov 19Dec 22

Season: Jan 28 – Dec 22 (328 dagen)

Zone10b

Laatste vorstJan 28

Eerste vorstDec 22

Seizoen328 dagen

Oogst110 dagen

ZonVolle Zon

When to Plant Ui in Zone 10b

Start Seeds Indoors: Nov 19

Start Ui seeds indoors around Nov 19 (10 weken voor de laatste vorst). Optimal germination temperature: 70F. Germinates in 7-14 days.

Transplant Outdoors: Dec 31

Transplant Ui seedlings outdoors after Dec 31. Wait until soil temperature reaches 45F. Space plants at 9/m² (10cm afstand). Harden off plants for a week before moving outside.

Harvest: Mar 21

First harvest approximately Mar 21 (~80 dagen from transplant). Continue harvesting until first frost (Dec 22).

Begeleidende Beplanting

✅ Aardbeien✅ Kool✅ Rode Bieten✅ Sla✅ Wortels✅ Tomaten

❌ Bonen❌ Erwten

Ui in Andere 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 Je Tuin voor Ui

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

Start Free Ui Growing Guide