When should I plant Bí ngòi in Zone 4b?

Start Bí ngòi seeds indoors around 3 Th4. Transplant outdoors after 15 Th5. Expect first harvest around 19 Th6.

What is the last frost date for Zone 4b?

The average last spring frost date for Zone 4b is 1 Th5. The first fall frost averages 5 Th10, giving a 157-day growing season.

Can I grow Bí ngòi in Zone 4b?

Yes. Bí ngòi needs 50 days to harvest. Zone 4b has a 157-day growing season, which is sufficient. You can plant up to 5 successions.

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🥒 Growing Bí ngòi in Zone 4b

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

Planting Calendar

Indoor

Outdoor

Harvest

3 Th45 Th10

Season: 1 Th5 – 5 Th10 (157 ngày) · Succession: plant every 3 weeks (up to 5x)

Vùng4b

Sương giá cuối1 Th5

Sương giá đầu5 Th10

Mùa vụ157 ngày

Thu hoạch50 ngày

Ánh sángNắng hoàn toàn

When to Plant Bí ngòi in Zone 4b

Start Seeds Indoors: 3 Th4

Start Bí ngòi seeds indoors around 3 Th4 (4 tuần trước sương giá cuối). Optimal germination temperature: 85F. Germinates in 4-10 days.

Transplant Outdoors: 15 Th5

Transplant Bí ngòi seedlings outdoors after 15 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: 19 Th6

First harvest approximately 19 Th6 (~35 ngày from transplant). Continue harvesting until first frost (5 Th10).

Fall Planting: 27 Th7

For a fall harvest, plant Bí ngòi around 27 Th7 (10 weeks before first frost).

Cây trồng đồng hành

✅ Ngô✅ Đậu✅ Sen cạn✅ Hoa ong

❌ Khoai tây

Bí ngòi 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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