When should I plant Ui in Zone 6a?

Start Ui seeds indoors around Feb 17. Transplant outdoors after Mar 31. Expect first harvest around Jun 19.

What is the last frost date for Zone 6a?

The average last spring frost date for Zone 6a is Apr 28. The first fall frost averages Oct 8, giving a 163-day growing season.

Can I grow Ui in Zone 6a?

Yes. Ui needs 110 days to harvest. Zone 6a has a 163-day growing season, which is sufficient.

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🧅 Kweken van Ui in Zone 6a

Zone 6a has mild winters and a long growing season -- good conditions for Ui. Laatste vorst: Apr 28. Eerste vorst: Oct 8.

Planting Calendar

Indoor

Outdoor

Harvest

Feb 17Oct 8

Season: Apr 28 – Oct 8 (163 dagen)

Zone6a

Laatste vorstApr 28

Eerste vorstOct 8

Seizoen163 dagen

Oogst110 dagen

ZonVolle Zon

When to Plant Ui in Zone 6a

Start Seeds Indoors: Feb 17

Start Ui seeds indoors around Feb 17 (10 weken voor de laatste vorst). Optimal germination temperature: 70F. Germinates in 7-14 days.

Transplant Outdoors: Mar 31

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

Harvest: Jun 19

First harvest approximately Jun 19 (~80 dagen from transplant). Continue harvesting until first frost (Oct 8).

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