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When to Plant Cilantro in Miami County, KS

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.

Miami County, Kansas is in USDA Zone 6a. The average last spring frost is April 12 and the first fall frost is October 25, giving you a growing season of approximately 196 days.

At an elevation of 689 feet, Miami County receives approximately 21.7 inches of rainfall annually with predominantly loam soil. Summer highs average 88ยฐF, providing good warmth for Cilantro during the growing season.

Miami County, KS (Zone 6a) Moderate season
196 days
Last Spring Frost April 12
196 growing days
First Fall Frost October 25

Miami County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (96 days to spare)
Start indoors: Mar 2 Transplant: Mar 30 🍅 Harvest: May 11 – Jul 13
Recommended (50%) ✓ Fits season (98 days to spare)
Start indoors: Mar 8 Transplant: Apr 5 🍅 Harvest: May 17 – Jul 19
Safe Start (90%) ✓ Fits season (94 days to spare)
Start indoors: Mar 23 Transplant: Apr 20 🍅 Harvest: Jun 1 – Aug 3

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
0.5″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 933 gal / 100 sq ft
Cilantro needs ~800 GDD — county provides 3,136 GDD Excellent fit

Cilantro Planting Timeline โ€” Miami County, KS

Cilantro Planting Calendar

Activity When Date Range
Start Indoors March 8 Mar 8 โ€“ Mar 22
Transplant Outdoors April 5 Apr 5 โ€“ Apr 19
Direct Sow March 29 Mar 29 โ€“ Apr 19
Fall Sowing August 16 Aug 16 โ€“ Aug 30
Harvest May 17 May 17 โ€“ Jul 19

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Start Indoors Direct Sow
April Transplant Outdoors Direct Sow
May Harvest
June Harvest
July Harvest
August Fall Sowing
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 6a

Growing Season

196 days

Growing Tips for Miami 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 Miami County, KS?

Miami County is in Zone 6a with an average last frost of April 12. Plan your Cilantro planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Miami County, KS?

Miami County, Kansas is in USDA Hardiness Zone 6a. The average last spring frost is April 12 and first fall frost is October 25.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Miami County gardeners in Zone 6a 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 Miami County, KS. Local conditions may vary. Last updated: April 2026.