When should I plant Green Onion in Zone 5b?

Start Green Onion seeds indoors around Mar 17. Transplant outdoors after Apr 14. Expect first harvest around May 24.

What is the last frost date for Zone 5b?

The average last spring frost date for Zone 5b is Apr 28. The first fall frost averages Oct 8, giving a 163-day growing season.

Can I grow Green Onion in Zone 5b?

Yes. Green Onion needs 65 days to harvest. Zone 5b has a 163-day growing season, which is sufficient. You can plant up to 4 successions.

Growing Green Onion in Zone 5b

Zone 5b has cold winters and a moderate growing season. Timing is key for Green Onion in this zone. Viimeinen halla: Apr 28. Ensimmäinen halla: Oct 8.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 17Oct 8

Season: Apr 28 – Oct 8 (163 päivää) · Succession: plant every 3 weeks (up to 4x)

Vyöhyke5b

Viimeinen hallaApr 28

Ensimmäinen hallaOct 8

Kausi163 päivää

Sato65 päivää

Aurinkofull-to-part

When to Plant Green Onion in Zone 5b

Start Seeds Indoors: Mar 17

Start Green Onion seeds indoors around Mar 17 (6 viikkoa ennen viimeistä hallaa). Optimal germination temperature: 65F. Germinates in 7-14 days.

Transplant Outdoors: Apr 14

Transplant Green Onion seedlings outdoors after Apr 14. Wait until soil temperature reaches 40F. Space plants at 16/m² (8cm välein). Harden off plants for a week before moving outside.

Harvest: May 24

First harvest approximately May 24 (~40 päivää from transplant). Continue harvesting until first frost (Oct 8). Green Onion can overwinter in mild climates for continued harvest.

Fall Planting: Aug 13

For a fall harvest, plant Green Onion around Aug 13 (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.

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