Growing Korean Small Onion in Zone 9b
Zone 9b has warm winters and an extended growing season — excellent for heat-loving crops like Korean Small Onion. Last frost: Mar 10. First frost: Nov 15.
Planting Calendar
Season: Mar 10 – Nov 15 (250 days)
When to Plant Korean Small Onion in Zone 9b
Harvest: Mar 22
First harvest approximately Mar 22 (~40 days from transplant). Continue harvesting until first frost (Nov 15). Korean Small Onion can overwinter in mild climates for continued harvest.
Fall Planting: Oct 4
For a fall harvest, plant Korean Small Onion around Oct 4 (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 9b?
Direct sow Korean Small Onion outdoors around Mar 10. Harvest around Mar 22.
What is the last frost date for Zone 9b?
The average last spring frost date for Zone 9b is Mar 10. The first fall frost averages Nov 15, giving a 250-day growing season.
Can I grow Korean Small Onion in Zone 9b?
Yes. Korean Small Onion needs 65 days to harvest. Zone 9b has a 250-day growing season, which is sufficient.
What is the best month to plant Korean Small Onion in Zone 9b?
The best time to plant Korean Small Onion in Zone 9b is around Mar 10, 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 9b, expect your first harvest around Mar 22.
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