When should I plant Ui in Zone 7a?

Start Ui seeds indoors around Feb 4. Transplant outdoors after Mar 18. Expect first harvest around Jun 6.

What is the last frost date for Zone 7a?

The average last spring frost date for Zone 7a is Apr 15. The first fall frost averages Oct 22, giving a 190-day growing season.

Can I grow Ui in Zone 7a?

Yes. Ui needs 110 days to harvest. Zone 7a has a 190-day growing season, which is sufficient.

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🧅 Kweken van Ui in Zone 7a

Zone 7a has mild winters and a long growing season -- good conditions for Ui. Laatste vorst: Apr 15. Eerste vorst: Oct 22.

Planting Calendar

Indoor

Outdoor

Harvest

Feb 4Oct 22

Season: Apr 15 – Oct 22 (190 dagen)

Zone7a

Laatste vorstApr 15

Eerste vorstOct 22

Seizoen190 dagen

Oogst110 dagen

ZonVolle Zon

When to Plant Ui in Zone 7a

Start Seeds Indoors: Feb 4

Start Ui seeds indoors around Feb 4 (10 weken voor de laatste vorst). Optimal germination temperature: 70F. Germinates in 7-14 days.

Transplant Outdoors: Mar 18

Transplant Ui seedlings outdoors after Mar 18. Wait until soil temperature reaches 45F. Space plants at 9/m² (10cm afstand). Harden off plants for a week before moving outside.

Harvest: Jun 6

First harvest approximately Jun 6 (~80 dagen from transplant). Continue harvesting until first frost (Oct 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