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
Season: Mar 20 – Nov 12 (237 days)
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
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 13bFrequently Asked Questions
When should I plant Korean Small Onion in Zone 9a?
Direct sow Korean Small Onion outdoors around Mar 20. Harvest around Apr 1.
What is the last frost date for Zone 9a?
The average last spring frost date for Zone 9a is Mar 20. The first fall frost averages Nov 12, giving a 237-day growing season.
Can I grow Korean Small Onion in Zone 9a?
Yes. Korean Small Onion needs 65 days to harvest. Zone 9a has a 237-day growing season, which is sufficient.
What is the best month to plant Korean Small Onion in Zone 9a?
The best time to plant Korean Small Onion in Zone 9a is around Mar 20, when soil temperatures are suitable and frost risk has passed.
What companion plants grow well with Korean Small Onion?
Good companion plants for Korean Small Onion include Carrot, Beet, Lettuce. Avoid planting Korean Small Onion near Bean, Pea.
How long does Korean Small Onion take to harvest?
Korean Small Onion takes approximately 65 days from planting to harvest. In Zone 9a, expect your first harvest around Apr 1.
Plan Your Korean Small Onion Garden
Track Korean Small Onion from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
Start Free Korean Small Onion Growing Guide