When should I plant Hành tây in Zone 4a?

Start Hành tây seeds indoors around 24 Th2. Transplant outdoors after 7 Th4. Expect first harvest around 26 Th6.

What is the last frost date for Zone 4a?

The average last spring frost date for Zone 4a is 5 Th5. The first fall frost averages 1 Th10, giving a 149-day growing season.

Can I grow Hành tây in Zone 4a?

Yes. Hành tây needs 110 days to harvest. Zone 4a has a 149-day growing season, which is sufficient.

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🧅 Growing Hành tây in Zone 4a

Zone 4a has cold winters and a moderate growing season. Timing is key for Hành tây in this zone. Sương giá cuối: 5 Th5. Sương giá đầu: 1 Th10.

Planting Calendar

Indoor

Outdoor

Harvest

24 Th21 Th10

Season: 5 Th5 – 1 Th10 (149 ngày)

Vùng4a

Sương giá cuối5 Th5

Sương giá đầu1 Th10

Mùa vụ149 ngày

Thu hoạch110 ngày

Ánh sángNắng hoàn toàn

When to Plant Hành tây in Zone 4a

Start Seeds Indoors: 24 Th2

Start Hành tây seeds indoors around 24 Th2 (10 tuần trước sương giá cuối). Optimal germination temperature: 70F. Germinates in 7-14 days.

Transplant Outdoors: 7 Th4

Transplant Hành tây seedlings outdoors after 7 Th4. Wait until soil temperature reaches 45F. Space plants at 9/m² (10cm khoảng cách). Harden off plants for a week before moving outside.

Harvest: 26 Th6

First harvest approximately 26 Th6 (~80 ngày from transplant). Continue harvesting until first frost (1 Th10).

Cây trồng đồng hành

✅ Dâu tây✅ Bắp cải✅ Củ dền✅ Rau diếp✅ Cà rốt✅ Cà chua

❌ Đậu❌ Đậu Hà Lan

Hành tây in Other 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

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