When should I plant Green Onion in Zone 3a?

Start Green Onion seeds indoors around Apr 10. Transplant outdoors after May 8. Expect first harvest around Jun 17.

What is the last frost date for Zone 3a?

The average last spring frost date for Zone 3a is May 22. The first fall frost averages Sep 12, giving a 113-day growing season.

Can I grow Green Onion in Zone 3a?

Yes. Green Onion needs 65 days to harvest. Zone 3a has a 113-day growing season, which is sufficient. You can plant up to 2 successions.

Growing Green Onion in Zone 3a

Zone 3a has harsh winters and a short growing season. Start Green Onion early indoors to maximize your harvest window. Viimeinen halla: May 22. Ensimmäinen halla: Sep 12.

Planting Calendar

Indoor

Outdoor

Harvest

Apr 10Sep 12

Season: May 22 – Sep 12 (113 päivää) · Succession: plant every 3 weeks (up to 2x)

Vyöhyke3a

Viimeinen hallaMay 22

Ensimmäinen hallaSep 12

Kausi113 päivää

Sato65 päivää

Aurinkofull-to-part

When to Plant Green Onion in Zone 3a

Start Seeds Indoors: Apr 10

Start Green Onion seeds indoors around Apr 10 (6 viikkoa ennen viimeistä hallaa). Optimal germination temperature: 65F. Germinates in 7-14 days.

Transplant Outdoors: May 8

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

Harvest: Jun 17

First harvest approximately Jun 17 (~40 päivää from transplant). Continue harvesting until first frost (Sep 12). Green Onion can overwinter in mild climates for continued harvest.

Fall Planting: Jul 18

For a fall harvest, plant Green Onion around Jul 18 (8 weeks before first frost).

Kumppaniviljely

✅ Porkkana ✅ Punajuuri ✅ Salaatti ✅ Tomaatti✅ Pepper✅ Kaali✅ Mansikat

❌ Bean❌ Herne

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