Growing Korean Small Onion in Zone 2a
Zone 2a has harsh winters and a short growing season. Start Korean Small Onion early indoors to maximize your harvest window. Last frost: May 15. First frost: Sep 15.
Planting Calendar
Apr 17Sep 15
Season: May 15 – Sep 15 (123 days)
Zone2a
Last FrostMay 15
First FrostSep 15
Season Length123 days
Days to Harvest65
SunFull Sun
Frost ToleranceHeavy
Spacing16/sqft (3" apart)
When to Plant Korean Small Onion in Zone 2a
Harvest: May 27
First harvest approximately May 27 (~40 days from transplant). Continue harvesting until first frost (Sep 15). Korean Small Onion can overwinter in mild climates for continued harvest.
Fall Planting: Aug 4
For a fall harvest, plant Korean Small Onion around Aug 4 (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.
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