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When to Plant Cumin in Roane County, TN

Cumin is a warm-season annual herb whose seeds are one of the most widely used spices globally. It requires a long, hot growing season of 3-4 months.

Roane County, Tennessee is in USDA Zone 7a. The average last spring frost is April 9 and the first fall frost is October 28, giving you a growing season of approximately 202 days.

At an elevation of 3,597 feet, Roane County receives approximately 54.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 92ยฐF, providing good warmth for Cumin during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cumin root diseases.

Roane County, TN (Zone 7a) Long season
202 days
Last Spring Frost April 9
202 growing days
First Fall Frost October 28

Roane County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-6.5

Drainage

Well Drained

Monthly Watering Guide for Cumin

Cumin needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Cumin Needs Rainfall You Supplement Action
Jan โ€” 4.1" 0" โ„๏ธ Dormant
Feb โ€” 4" 0" โ„๏ธ Dormant
Mar โ€” 4.8" 0" โ„๏ธ Dormant
Apr 4.3" 4.7" 0" โœ… Rainfall sufficient
May 4.3" 3.9" 0.4" ๐Ÿ’ง Light watering
Jun 4.3" 4.9" 0" โœ… Rainfall sufficient
Jul 4.3" 6.2" 0" โœ… Rainfall sufficient
Aug 4.3" 4.6" 0" โœ… Rainfall sufficient
Sep 4.3" 3.8" 0.5" ๐Ÿ’ง Light watering
Oct 4.3" 4" 0.3" ๐Ÿ’ง Light watering
Nov โ€” 4.4" 0" โ„๏ธ Dormant
Dec โ€” 4.9" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Aprโ€“Oct in Roane County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Cumin Planting Timeline โ€” Roane County, TN

Cumin Planting Calendar

Activity When Date Range
Start Indoors March 5 Mar 5 โ€“ Mar 19
Transplant Outdoors April 2 Apr 2 โ€“ Apr 16
Direct Sow March 26 Mar 26 โ€“ Apr 16
Harvest July 16 Jul 16 โ€“ Sep 17
Fall Sowing August 19 Aug 19 โ€“ Sep 2

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 โ€”
June โ€”
July Harvest
August Fall Sowing Harvest
September Fall Sowing Harvest
October โ€”
November โ€”
December โ€”

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

Low โ€” drought tolerant

๐Ÿ“… Days to Maturity

100โ€“120 days

๐Ÿงช Soil pH

Needs 6โ€“8 ยท Your soil: N/A

๐Ÿ—บ๏ธ USDA Zone

Zone 7a

๐Ÿ“† Growing Season

202 days in Roane County

Growing Tips for Roane County

Start seeds indoors 4 weeks before last frost. Transplant after all danger of frost. Harvest when seed heads turn brown. Requires consistent warmth for proper seed development.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cumin in Roane County, TN?

Roane County is in Zone 7a with an average last frost of April 9. Plan your Cumin planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Roane County, TN?

Roane County, Tennessee is in USDA Hardiness Zone 7a. The average last spring frost is April 9 and first fall frost is October 28.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Roane 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 Roane County, TN. Local conditions may vary. Last updated: April 2026.