When should I plant Koriander in Zone 4a?

Direct sow Koriander outdoors around Apr 21. Expect first harvest around May 21.

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.

Yes. Koriander needs 30 days to harvest. Zone 4a has a 149-day growing season, which is sufficient. You can plant up to 8 successions.

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Zone 4a has cold winters and a moderate growing season. Timing is key for Koriander in this zone. Posledný mráz: May 5. Prvý mráz: Oct 1.

Outdoor

Harvest

Apr 21Oct 1

Season: May 5 – Oct 1 (149 dní) · Succession: plant every 2 weeks (up to 8x)

Zóna4a

Posledný mrázMay 5

Prvý mrázOct 1

Sezóna149 dní

Úroda30 dní

SlnkoPolotieň

Direct sow Koriander seeds outdoors around Apr 21. Wait until soil temperature reaches 50F. Space plants at 4/m² (15cm rozostup).

First harvest approximately May 21 (~30 dní from planting). Continue harvesting until first frost (Oct 1).

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

✅ Rajčiaky✅ Papriky✅ Fazuľa✅ Hrachy✅ Špenát

❌ Fenikel❌ Kôpor

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