When should I plant Koriander in Zone 1a?

Direct sow Koriander outdoors around May 11. Expect first harvest around Jun 10.

What is the last frost date for Zone 1a?

The average last spring frost date for Zone 1a is May 25. The first fall frost averages Aug 28, giving a 95-day growing season.

Can I grow Koriander in Zone 1a?

Yes. Koriander needs 30 days to harvest. Zone 1a has a 95-day growing season, which is sufficient. You can plant up to 4 successions.

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🌿 Growing Koriander in Zone 1a

Zone 1a has harsh winters and a short growing season. Start Koriander early indoors to maximize your harvest window. Sista frost: May 25. Första frost: Aug 28.

Planting Calendar

Outdoor

Harvest

May 11Aug 28

Season: May 25 – Aug 28 (95 dagar) · Succession: plant every 2 weeks (up to 4x)

Zon1a

Sista frostMay 25

Första frostAug 28

Säsong95 dagar

Skörd30 dagar

SolHalvskugga

When to Plant Koriander in Zone 1a

Sow Seeds Outdoors: May 11

Direct sow Koriander seeds outdoors around May 11. Wait until soil temperature reaches 50F. Space plants at 4/m² (15cm avstånd).

Harvest: Jun 10

First harvest approximately Jun 10 (~30 dagar from planting). Continue harvesting until first frost (Aug 28).

Fall Planting: Jul 17

For a fall harvest, plant Koriander around Jul 17 (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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