Growing Korean Small Onion in Zone 6a
Zone 6a has mild winters and a long growing season — good conditions for Korean Small Onion. Last frost: Apr 28. First frost: Oct 8.
Planting Calendar
Mar 31Oct 8
Season: Apr 28 – Oct 8 (163 days)
Zone6a
Last FrostApr 28
First FrostOct 8
Season Length163 days
Days to Harvest65
SunFull Sun
Frost ToleranceHeavy
Spacing16/sqft (3" apart)
When to Plant Korean Small Onion in Zone 6a
Harvest: May 10
First harvest approximately May 10 (~40 days from transplant). Continue harvesting until first frost (Oct 8). Korean Small Onion can overwinter in mild climates for continued harvest.
Fall Planting: Aug 27
For a fall harvest, plant Korean Small Onion around Aug 27 (6 weeks before first frost).
Companion Planting
❌ 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 13bPlan 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