When should I plant Koper in Zone 3b?

Direct sow Koper outdoors around May 1. Expect first harvest around Jun 10.

What is the last frost date for Zone 3b?

The average last spring frost date for Zone 3b is May 15. The first fall frost averages Sep 22, giving a 130-day growing season.

Can I grow Koper in Zone 3b?

Yes. Koper needs 40 days to harvest. Zone 3b has a 130-day growing season, which is sufficient. You can plant up to 4 successions.

Growing Koper in Zone 3b

Zone 3b has harsh winters and a short growing season. Start Koper early indoors to maximize your harvest window. Zadnja slana: May 15. Prva slana: Sep 22.

Planting Calendar

Outdoor

Harvest

May 1Sep 22

Season: May 15 – Sep 22 (130 dni) · Succession: plant every 3 weeks (up to 4x)

Cona3b

Zadnja slanaMay 15

Prva slanaSep 22

Sezona130 dni

Žetev40 dni

SoncePolno Sonce

When to Plant Koper in Zone 3b

Sow Seeds Outdoors: May 1

Direct sow Koper seeds outdoors around May 1. Wait until soil temperature reaches 50F. Space plants at 4/m² (15cm narazen).

Harvest: Jun 10

First harvest approximately Jun 10 (~40 dni from planting). Continue harvesting until first frost (Sep 22).

Fall Planting: Aug 11

For a fall harvest, plant Koper around Aug 11 (6 weeks before first frost).

Sobivanje Rastlin

✅ Zelje ✅ Solata✅ Čebula✅ Koruza✅ Kumare

❌ Korenje

Koper 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 Koper

Track Koper from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

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