When should I plant Ui in Zone 1a?

Start Ui seeds indoors around Mar 16. Transplant outdoors after Apr 27. Expect first harvest around Jul 16.

What is the last frost date for Zone 1a?

The average last spring frost date for Zone 1a is May 25. The first fall frost averages Aug 28, giving a 95-day growing season.

Can I grow Ui in Zone 1a?

Zone 1a has a 95-day growing season, which may be too short for Ui (110 days needed). Consider short-season varieties or season extension techniques.

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🧅 Kweken van Ui in Zone 1a

Zone 1a has harsh winters and a short growing season. Start Ui early indoors to maximize your harvest window. Laatste vorst: May 25. Eerste vorst: Aug 28.

Season Too Short

Ui needs 110 days to harvest, but Zone 1a has only a 95-day growing season. Consider short-season varieties or season extension techniques.

Zone1a

Laatste vorstMay 25

Eerste vorstAug 28

Seizoen95 dagen

Oogst110 dagen

ZonVolle Zon

When to Plant Ui in Zone 1a

Start Seeds Indoors: Mar 16

Start Ui seeds indoors around Mar 16 (10 weken voor de laatste vorst). Optimal germination temperature: 70F. Germinates in 7-14 days.

Transplant Outdoors: Apr 27

Transplant Ui seedlings outdoors after Apr 27. Wait until soil temperature reaches 45F. Space plants at 9/m² (10cm afstand). Harden off plants for a week before moving outside.

Harvest: Jul 16

First harvest approximately Jul 16 (~80 dagen from transplant). Continue harvesting until first frost (Aug 28).

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.

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