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🌿 Growing Cilantro in Zone 3b
Zone 3b has harsh winters and a short growing season. Start Cilantro early indoors to maximize your harvest window. Last frost: May 15. First frost: Sep 22.
Planting Calendar
Season: May 15 – Sep 22 (130 days) · Succession: plant every 2 weeks (up to 7x)
When to Plant Cilantro in Zone 3b
Sow Seeds Outdoors: May 1
Direct sow Cilantro seeds outdoors around May 1. Soil temperature should be at least 50°F. Space at 4/sqft (6" apart).
Harvest: May 31
First harvest approximately May 31 (~30 days from planting). Continue harvesting until first frost (Sep 22).
Fall Planting: Aug 11
For a fall harvest, plant Cilantro around Aug 11 (6 weeks before first frost).
Companion Planting
Cilantro 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 13bFrequently Asked Questions
When should I plant Cilantro in Zone 3b?
Direct sow Cilantro outdoors around May 1. Harvest around May 31.
What is the last frost date for Zone 3b?
The average last spring frost date for Zone 3b is May 15. The first fall frost averages Sep 22, giving a 130-day growing season.
Can I grow Cilantro in Zone 3b?
Yes. Cilantro needs 30 days to harvest. Zone 3b has a 130-day growing season, which is sufficient. You can plant up to 7 successions.
What is the best month to plant Cilantro in Zone 3b?
The best time to plant Cilantro in Zone 3b is around May 1, when soil temperatures are suitable and frost risk has passed.
What companion plants grow well with Cilantro?
Good companion plants for Cilantro include Tomatoes, Peppers, Beans, Peas, Spinach. Avoid planting Cilantro near Fennel, Dill.
How long does Cilantro take to harvest?
Cilantro takes approximately 30 days from planting to harvest. In Zone 3b, expect your first harvest around May 31.
Plan Your Cilantro Garden
Track Cilantro from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
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