When should I plant Bí đỏ in Zone 4a?

Start Bí đỏ seeds indoors around 7 Th4. Transplant outdoors after 19 Th5. Expect first harvest around 22 Th8.

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 Bí đỏ in Zone 4a?

Yes. Bí đỏ needs 100 days to harvest. Zone 4a has a 149-day growing season, which is sufficient.

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🎃 Growing Bí đỏ in Zone 4a

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

Planting Calendar

Indoor

Outdoor

Harvest

7 Th41 Th10

Season: 5 Th5 – 1 Th10 (149 ngày)

Vùng4a

Sương giá cuối5 Th5

Sương giá đầu1 Th10

Mùa vụ149 ngày

Thu hoạch100 ngày

Ánh sángNắng hoàn toàn

When to Plant Bí đỏ in Zone 4a

Start Seeds Indoors: 7 Th4

Start Bí đỏ seeds indoors around 7 Th4 (4 tuần trước sương giá cuối). Optimal germination temperature: 85F. Germinates in 5-10 days.

Transplant Outdoors: 19 Th5

Transplant Bí đỏ seedlings outdoors after 19 Th5. Wait until soil temperature reaches 65F. Space plants at 1/m² (30cm khoảng cách). Harden off plants for a week before moving outside.

Harvest: 22 Th8

First harvest approximately 22 Th8 (~95 ngày from transplant). Continue harvesting until first frost (1 Th10).

Cây trồng đồng hành

✅ Cúc vạn thọ✅ Ngô✅ Sen cạn✅ Oregano

❌ Khoai tây

Bí đỏ 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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Track Bí đỏ from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

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