When should I plant Koriander in Zone 3a?

Direct sow Koriander outdoors around May 8. Expect first harvest around Jun 7.

What is the last frost date for Zone 3a?

The average last spring frost date for Zone 3a is May 22. The first fall frost averages Sep 12, giving a 113-day growing season.

Can I grow Koriander in Zone 3a?

Yes. Koriander needs 30 days to harvest. Zone 3a has a 113-day growing season, which is sufficient. You can plant up to 5 successions.

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🌿 Growing Koriander in Zone 3a

Zone 3a has harsh winters and a short growing season. Start Koriander early indoors to maximize your harvest window. Sista frost: May 22. Första frost: Sep 12.

Planting Calendar

Outdoor

Harvest

May 8Sep 12

Season: May 22 – Sep 12 (113 dagar) · Succession: plant every 2 weeks (up to 5x)

Zon3a

Sista frostMay 22

Första frostSep 12

Säsong113 dagar

Skörd30 dagar

SolHalvskugga

When to Plant Koriander in Zone 3a

Sow Seeds Outdoors: May 8

Direct sow Koriander seeds outdoors around May 8. Wait until soil temperature reaches 50F. Space plants at 4/m² (15cm avstånd).

Harvest: Jun 7

First harvest approximately Jun 7 (~30 dagar from planting). Continue harvesting until first frost (Sep 12).

Fall Planting: Aug 1

For a fall harvest, plant Koriander around Aug 1 (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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