When should I plant Koriander in Zone 3b?

Direct sow Koriander outdoors around May 1. Expect first harvest around May 31.

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 Koriander in Zone 3b?

Yes. Koriander needs 30 days to harvest. Zone 3b has a 130-day growing season, which is sufficient. You can plant up to 7 successions.

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🌿 Growing Koriander in Zone 3b

Zone 3b has harsh winters and a short growing season. Start Koriander early indoors to maximize your harvest window. Sista frost: May 15. Första frost: Sep 22.

Planting Calendar

Outdoor

Harvest

May 1Sep 22

Season: May 15 – Sep 22 (130 dagar) · Succession: plant every 2 weeks (up to 7x)

Zon3b

Sista frostMay 15

Första frostSep 22

Säsong130 dagar

Skörd30 dagar

SolHalvskugga

When to Plant Koriander in Zone 3b

Sow Seeds Outdoors: May 1

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

Harvest: May 31

First harvest approximately May 31 (~30 dagar from planting). Continue harvesting until first frost (Sep 22).

Fall Planting: Aug 11

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

Samplantering

✅ Tomater✅ Paprikor✅ Bönor✅ Ärtor✅ Spenat

❌ Fänkål❌ Dill

Koriander 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 Koriander

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

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