When should I plant Bok Choy in Zone 4a?

Start Bok Choy seeds indoors around 7 Th4. Transplant outdoors after 21 Th4. Expect first harvest around 26 Th5.

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 Bok Choy in Zone 4a?

Yes. Bok Choy needs 45 days to harvest. Zone 4a has a 149-day growing season, which is sufficient. You can plant up to 7 successions.

Growing Bok Choy in Zone 4a

Zone 4a has cold winters and a moderate growing season. Timing is key for Bok Choy 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) · Succession: plant every 2 weeks (up to 7x)

Vùng4a

Sương giá cuối5 Th5

Sương giá đầu1 Th10

Mùa vụ149 ngày

Thu hoạch45 ngày

Ánh sángNắng một phần

When to Plant Bok Choy in Zone 4a

Start Seeds Indoors: 7 Th4

Start Bok Choy seeds indoors around 7 Th4 (4 tuần trước sương giá cuối). Optimal germination temperature: 65F. Germinates in 4-8 days.

Transplant Outdoors: 21 Th4

Transplant Bok Choy seedlings outdoors after 21 Th4. Wait until soil temperature reaches 45F. Space plants at 4/m² (15cm khoảng cách). Harden off plants for a week before moving outside.

Harvest: 26 Th5

First harvest approximately 26 Th5 (~35 ngày from transplant). Continue harvesting until first frost (1 Th10).

Fall Planting: 13 Th8

For a fall harvest, plant Bok Choy around 13 Th8 (7 weeks before first frost).

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Bok Choy 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

Plan Your Garden Bok Choy

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

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