When should I plant Green Onion in Zone 4a?

Start Green Onion seeds indoors around Mar 24. Transplant outdoors after Apr 21. Expect first harvest around May 31.

What is the last frost date for Zone 4a?

The average last spring frost date for Zone 4a is May 5. The first fall frost averages Oct 1, 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.

Kweken van Green Onion in Zone 4a

Zone 4a has cold winters and a moderate growing season. Timing is key for Green Onion in this zone. Laatste vorst: May 5. Eerste vorst: Oct 1.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 24Oct 1

Season: May 5 – Oct 1 (149 dagen) · Succession: plant every 3 weeks (up to 4x)

Zone4a

Laatste vorstMay 5

Eerste vorstOct 1

Seizoen149 dagen

Oogst65 dagen

Zonfull-to-part

When to Plant Green Onion in Zone 4a

Start Seeds Indoors: Mar 24

Start Green Onion seeds indoors around Mar 24 (6 weken voor de laatste vorst). 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/m² (8cm afstand). Harden off plants for a week before moving outside.

Harvest: May 31

First harvest approximately May 31 (~40 dagen 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).

Begeleidende Beplanting

✅ Wortel ✅ Rode Biet ✅ Sla ✅ Tomaat✅ Pepper✅ Kool✅ Aardbeien

❌ Bean❌ Erwt

Green Onion in Andere 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 Je Tuin voor 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