When should I plant Cilantro in Zone 4a?

Direct sow Cilantro outdoors around Apr 21. 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. Cilantro 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 Cilantro in this zone. Last frost: May 5. First frost: Oct 1.

Outdoor

Harvest

Apr 21Oct 1

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

Zone4a

Last FrostMay 5

First FrostOct 1

Season Length149 days

Days to Harvest30

SunPart Sun / Part Shade

Frost ToleranceLight

Spacing4/sqft (6" apart)

Direct sow Cilantro seeds outdoors around Apr 21. Soil temperature should be at least 50°F. Space at 4/sqft (6" apart).

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

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

✅ Tomatoes✅ Peppers✅ Beans✅ Peas✅ Spinach

❌ Fennel❌ Dill

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