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. น้ำค้างแข็งครั้งสุดท้าย: May 5. น้ำค้างแข็งครั้งแรก: Oct 1.
Planting Calendar
Season: May 5 – Oct 1 (149 วัน) · Succession: plant every 3 weeks (up to 4x)
When to Plant Green Onion in Zone 4a
Start Seeds Indoors: Mar 24
Start Green Onion seeds indoors around Mar 24 (6 สัปดาห์ก่อนน้ำค้างแข็งครั้งสุดท้าย). Optimal germination temperature: 65F. Germinates in 7-14 days.
Transplant Outdoors: Apr 21
Transplant Green Onion seedlings outdoors after Apr 21. Wait until soil temperature reaches 40F. Space plants at 16/ตร.ม. (8cm ห่างกัน). Harden off plants for a week before moving outside.
Harvest: May 31
First harvest approximately May 31 (~40 วัน from transplant). Continue harvesting until first frost (Oct 1). Green Onion can overwinter in mild climates for continued harvest.
Fall Planting: Aug 6
For a fall harvest, plant Green Onion around Aug 6 (8 weeks before first frost).
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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 13bPlan Your Garden Green Onion
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