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When to Plant Cilantro in Clay County, AR

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.

Clay County, Arkansas is in USDA Zone 7a. The average last spring frost is March 27 and the first fall frost is November 2, giving you a growing season of approximately 220 days.

At an elevation of 1,448 feet, Clay County receives approximately 54.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90ยฐF, providing good warmth for Cilantro during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cilantro root diseases.

Clay County, AR (Zone 7a) Long season
220 days
Last Spring Frost March 27
220 growing days
First Fall Frost November 2

Clay County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (125 days to spare)
Start indoors: Feb 12 Transplant: Mar 12 🍅 Harvest: Apr 23 – Jun 25
Recommended (50%) ✓ Fits season (122 days to spare)
Start indoors: Feb 20 Transplant: Mar 20 🍅 Harvest: May 1 – Jul 3
Safe Start (90%) ✓ Fits season (122 days to spare)
Start indoors: Mar 12 Transplant: Apr 9 🍅 Harvest: May 21 – Jul 23

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
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Cilantro needs ~875 GDD — county provides 3,850 GDD Excellent fit

Cilantro Planting Timeline โ€” Clay County, AR

Cilantro Planting Calendar

Activity When Date Range
Start Indoors February 20 Feb 20 โ€“ Mar 6
Transplant Outdoors March 20 Mar 20 โ€“ Apr 3
Direct Sow March 13 Mar 13 โ€“ Apr 3
Fall Sowing August 24 Aug 24 โ€“ Sep 7
Harvest May 1 May 1 โ€“ Jul 3

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

Month-by-Month Timeline

MonthActivities
January โ€”
February Start Indoors
March Start Indoors Transplant Outdoors Direct Sow
April Transplant Outdoors Direct Sow
May Harvest
June Harvest
July Harvest
August Fall Sowing
September Fall Sowing
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 7a

Growing Season

220 days

Growing Tips for Clay 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 Clay County, AR?

Clay County is in Zone 7a with an average last frost of March 27. Plan your Cilantro planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Clay County, AR?

Clay County, Arkansas is in USDA Hardiness Zone 7a. The average last spring frost is March 27 and first fall frost is November 2.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Clay County gardeners in Zone 7a 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 Clay County, AR. Local conditions may vary. Last updated: April 2026.