Plant Anywhere›Plant Guides›Korean Small Onion›Zone 9a
Korean Small Onion illustration

Growing Korean Small Onion in Zone 9a

Zone 9a has warm winters and an extended growing season — excellent for heat-loving crops like Korean Small Onion. Last frost: Mar 20. First frost: Nov 12.

Planting Calendar

Outdoor
Harvest
Feb 20Nov 12

Season: Mar 20 – Nov 12 (237 days)

Zone9a
Last FrostMar 20
First FrostNov 12
Season Length237 days
Days to Harvest65
SunFull Sun
Frost ToleranceHeavy
Spacing16/sqft (3" apart)

When to Plant Korean Small Onion in Zone 9a

Harvest: Apr 1

First harvest approximately Apr 1 (~40 days from transplant). Continue harvesting until first frost (Nov 12). Korean Small Onion can overwinter in mild climates for continued harvest.

Fall Planting: Oct 1

For a fall harvest, plant Korean Small Onion around Oct 1 (6 weeks before first frost).

Companion Planting

✅ Carrot✅ Beet✅ Lettuce
❌ Bean❌ Pea

Korean Small 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 Korean Small Onion Garden

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

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