Growing Green Onion in Zone 11b

Zone 11b has a year-round growing season. Green Onion can be planted almost any time with proper planning. Last frost: Jan 15. First frost: Dec 31.

Planting Calendar

Indoor

Outdoor

Harvest

Dec 4Dec 31

Season: Jan 15 – Dec 31 (350 days) · Succession: plant every 3 weeks (up to 13x)

Zone11b

Last FrostJan 15

First FrostDec 31

Season Length350 days

Days to Harvest65

Sunfull-to-part

Frost ToleranceHeavy

Spacing16/sqft (3" apart)

When to Plant Green Onion in Zone 11b

Start Seeds Indoors: Dec 4

Start Green Onion seeds indoors around Dec 4 (6 weeks before last frost). Optimal germination temperature: 65°F. Germinates in 7–14 days.

Transplant Outdoors: Jan 1

Transplant Green Onion seedlings outdoors after Jan 1. Wait until soil temperature reaches 40°F. Space plants at 16/sqft (3" apart). Harden off plants for a week before moving outside.

Harvest: Feb 10

First harvest approximately Feb 10 (~40 days from transplant). Continue harvesting until first frost (Dec 31). Green Onion can overwinter in mild climates for continued harvest.

Fall Planting: Nov 5

For a fall harvest, plant Green Onion around Nov 5 (8 weeks before first frost).

Companion Planting

✅ Carrot ✅ Beet ✅ Lettuce ✅ Tomato✅ Pepper✅ Cabbage✅ Strawberries

❌ Bean❌ Pea

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

Frequently Asked Questions

When should I plant Green Onion in Zone 11b?

Start Green Onion seeds indoors around Dec 4. Transplant outdoors after Jan 1. Expect first harvest around Feb 10.

What is the last frost date for Zone 11b?

The average last spring frost date for Zone 11b is Jan 15. The first fall frost averages Dec 31, giving a 350-day growing season.

Can I grow Green Onion in Zone 11b?

Yes. Green Onion needs 65 days to harvest. Zone 11b has a 350-day growing season, which is sufficient. You can plant up to 13 successions.

What is the best month to plant Green Onion in Zone 11b?

The best time to start Green Onion in Zone 11b is Dec. Begin seeds indoors around Dec 4, then transplant outdoors after the last frost date of Jan 15.

What companion plants grow well with Green Onion?

Good companion plants for Green Onion include Carrot, Beet, Lettuce, Tomato, Pepper, Cabbage. Avoid planting Green Onion near Bean, Pea.

How long does Green Onion take to harvest?

Green Onion takes approximately 65 days from planting to harvest. In Zone 11b, expect your first harvest around Feb 10.

Plan Your Green Onion Garden

Track Green Onion from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

Start Free Green Onion Growing Guide