When should I plant Ui in Zone 3a?

Start Ui seeds indoors around Mar 13. Transplant outdoors after Apr 24. Expect first harvest around Jul 13.

What is the last frost date for Zone 3a?

The average last spring frost date for Zone 3a is May 22. The first fall frost averages Sep 12, giving a 113-day growing season.

Can I grow Ui in Zone 3a?

Yes. Ui needs 110 days to harvest. Zone 3a has a 113-day growing season, which is sufficient.

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🧅 Kweken van Ui in Zone 3a

Zone 3a has harsh winters and a short growing season. Start Ui early indoors to maximize your harvest window. Laatste vorst: May 22. Eerste vorst: Sep 12.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 13Sep 12

Season: May 22 – Sep 12 (113 dagen)

Zone3a

Laatste vorstMay 22

Eerste vorstSep 12

Seizoen113 dagen

Oogst110 dagen

ZonVolle Zon

When to Plant Ui in Zone 3a

Start Seeds Indoors: Mar 13

Start Ui seeds indoors around Mar 13 (10 weken voor de laatste vorst). Optimal germination temperature: 70F. Germinates in 7-14 days.

Transplant Outdoors: Apr 24

Transplant Ui seedlings outdoors after Apr 24. Wait until soil temperature reaches 45F. Space plants at 9/m² (10cm afstand). Harden off plants for a week before moving outside.

Harvest: Jul 13

First harvest approximately Jul 13 (~80 dagen from transplant). Continue harvesting until first frost (Sep 12).

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