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When to Plant Cilantro in Cortland County, NY

Cilantro is a dual-purpose herb providing fresh leaves (cilantro) and dried seeds (coriander). It bolts quickly in heat, producing flowers beloved by beneficial insects.

Cortland County, New York is in USDA Zone 5a. The average last spring frost is May 11 and the first fall frost is October 11, giving you a growing season of approximately 153 days.

At an elevation of 729 feet, Cortland County receives approximately 44.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87ยฐF, providing good warmth for Cilantro during the growing season.

Cortland County, NY (Zone 5a) Moderate season
153 days
Last Spring Frost May 11
153 growing days
First Fall Frost October 11

Cortland County Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (56 days to spare)
Start indoors: Mar 30 Transplant: Apr 27 🍅 Harvest: Jun 8 – Aug 10
Recommended (50%) ✓ Fits season (55 days to spare)
Start indoors: Apr 6 Transplant: May 4 🍅 Harvest: Jun 15 – Aug 17
Safe Start (90%) ✓ Fits season (58 days to spare)
Start indoors: Apr 20 Transplant: May 18 🍅 Harvest: Jun 29 – Aug 31

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.2″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Cilantro needs ~762 GDD — county provides 2,333 GDD Excellent fit

Cilantro Planting Timeline โ€” Cortland County, NY

Cilantro Planting Calendar

Activity When Date Range
Start Indoors April 6 Apr 6 โ€“ Apr 20
Transplant Outdoors May 4 May 4 โ€“ May 18
Direct Sow April 27 Apr 27 โ€“ May 18
Fall Sowing August 2 Aug 2 โ€“ Aug 16
Harvest June 15 Jun 15 โ€“ Aug 17

Plant 0.5" deep ยท 8" apart ยท Rows 12" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Start Indoors Direct Sow
May Transplant Outdoors Direct Sow
June Harvest
July Harvest
August Fall Sowing Harvest
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Partial Shade (3-6 hours)

Water

Moderate โ€” regular watering

Days to Maturity

40โ€“60 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 5a

Growing Season

153 days

Growing Tips for Cortland County

Succession sow every 2-3 weeks. Provide afternoon shade in warm weather. Harvest leaves before flowering or allow some plants to go to seed for coriander and self-sowing.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Level Up Your Garden

Frequently Asked Questions

When should I plant Cilantro in Cortland County, NY?

Cortland County is in Zone 5a with an average last frost of May 11. Plan your Cilantro planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Cortland County, NY?

Cortland County, New York is in USDA Hardiness Zone 5a. The average last spring frost is May 11 and first fall frost is October 11.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Cortland County gardeners in Zone 5a organize planting dates, track what's growing, and never miss a planting window.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Cortland County, NY. Local conditions may vary. Last updated: April 2026.