When should I plant Koriandr in Zone 4a?

Direct sow Koriandr 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. Koriandr 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 Koriandr in this zone. Poslední mráz: May 5. První mráz: Oct 1.

Outdoor

Harvest

Apr 21Oct 1

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

Zóna4a

Poslední mrázMay 5

První mrázOct 1

Sezóna149 dní

Sklizeň30 dní

SlunceČástečný Stín

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

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

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

✅ Rajčata✅ Papriky✅ Fazole✅ Hrášky✅ Špenát

❌ Fenýkl❌ Kopr

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

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