When should I plant Korean Small Onion in Zone 4a?

Direct sow Korean Small Onion outdoors around May 5. Expect first harvest around May 17.

What is the last frost date for Zone 4a?

The average last spring frost date for Zone 4a is May 5. The first fall frost averages Oct 1, giving a 149-day growing season.

Can I grow Korean Small Onion in Zone 4a?

Yes. Korean Small Onion needs 65 days to harvest. Zone 4a has a 149-day growing season, which is sufficient.

Growing Korean Small Onion in Zone 4a

Zone 4a has cold winters and a moderate growing season. Timing is key for Korean Small Onion in this zone. น้ำค้างแข็งครั้งสุดท้าย: May 5. น้ำค้างแข็งครั้งแรก: Oct 1.

Planting Calendar

Outdoor

Harvest

Apr 7Oct 1

Season: May 5 – Oct 1 (149 วัน)

โซน4a

น้ำค้างแข็งครั้งสุดท้ายMay 5

น้ำค้างแข็งครั้งแรกOct 1

ฤดูกาล149 วัน

เก็บเกี่ยว65 วัน

แสงแดดแดดเต็มที่

When to Plant Korean Small Onion in Zone 4a

Harvest: May 17

First harvest approximately May 17 (~40 วัน from transplant). Continue harvesting until first frost (Oct 1). Korean Small Onion can overwinter in mild climates for continued harvest.

Fall Planting: Aug 20

For a fall harvest, plant Korean Small Onion around Aug 20 (6 weeks before first frost).

การปลูกพืชคู่กัน

✅ แครอท ✅ บีทรูท ✅ ผักกาด

❌ Bean❌ ถั่วลันเตา

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 Garden Korean Small Onion

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