When should I plant Green Onion in Zone 4a?

Start Green Onion seeds indoors around 24 Th3. Transplant outdoors after 21 Th4. Expect first harvest around 31 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 Green Onion in Zone 4a?

Yes. Green Onion needs 65 days to harvest. Zone 4a has a 149-day growing season, which is sufficient. You can plant up to 4 successions.

Growing Green Onion in Zone 4a

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

Planting Calendar

Indoor

Outdoor

Harvest

24 Th31 Th10

Season: 5 Th5 – 1 Th10 (149 ngày) · Succession: plant every 3 weeks (up to 4x)

Vùng4a

Sương giá cuối5 Th5

Sương giá đầu1 Th10

Mùa vụ149 ngày

Thu hoạch65 ngày

Ánh sángfull-to-part

When to Plant Green Onion in Zone 4a

Start Seeds Indoors: 24 Th3

Start Green Onion seeds indoors around 24 Th3 (6 tuần trước sương giá cuối). Optimal germination temperature: 65F. Germinates in 7-14 days.

Transplant Outdoors: 21 Th4

Transplant Green Onion seedlings outdoors after 21 Th4. Wait until soil temperature reaches 40F. Space plants at 16/m² (8cm khoảng cách). Harden off plants for a week before moving outside.

Harvest: 31 Th5

First harvest approximately 31 Th5 (~40 ngày from transplant). Continue harvesting until first frost (1 Th10). Green Onion can overwinter in mild climates for continued harvest.

Fall Planting: 6 Th8

For a fall harvest, plant Green Onion around 6 Th8 (8 weeks before first frost).

Cây trồng đồng hành

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

❌ Bean❌ Đậu Hà Lan

Green Onion 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 Green Onion

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

Start Free Green Onion Growing Guide