When should I plant Green Onion in Zone 4b?

Start Green Onion seeds indoors around Mar 20. Transplant outdoors after Apr 17. Expect first harvest around May 27.

What is the last frost date for Zone 4b?

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

Can I grow Green Onion in Zone 4b?

Yes. Green Onion needs 65 days to harvest. Zone 4b has a 157-day growing season, which is sufficient. You can plant up to 4 successions.

Growing Green Onion in Zone 4b

Zone 4b has cold winters and a moderate growing season. Timing is key for Green Onion in this zone. כפור אחרון: May 1. כפור ראשון: Oct 5.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 20Oct 5

Season: May 1 – Oct 5 (157 ימים) · Succession: plant every 3 weeks (up to 4x)

אזור4b

כפור אחרוןMay 1

כפור ראשוןOct 5

עונה157 ימים

קטיף65 ימים

שמשfull-to-part

When to Plant Green Onion in Zone 4b

Start Seeds Indoors: Mar 20

Start Green Onion seeds indoors around Mar 20 (6 שבועות לפני הכפור האחרון). Optimal germination temperature: 65F. Germinates in 7-14 days.

Transplant Outdoors: Apr 17

Transplant Green Onion seedlings outdoors after Apr 17. Wait until soil temperature reaches 40F. Space plants at 16/מ² (8cm מרווח). Harden off plants for a week before moving outside.

Harvest: May 27

First harvest approximately May 27 (~40 ימים from transplant). Continue harvesting until first frost (Oct 5). Green Onion can overwinter in mild climates for continued harvest.

Fall Planting: Aug 10

For a fall harvest, plant Green Onion around Aug 10 (8 weeks before first frost).

שתילה מלווה

✅ גזר ✅ סלק ✅ חסה ✅ עגבניה✅ Pepper✅ כרוב✅ תותים

❌ Bean❌ אפונה

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