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When to Plant Potatoes in Dyer County, TN

Potatoes are a versatile staple crop that produces tubers underground. They come in hundreds of varieties with varying colors, textures, and maturity dates.

Dyer County, Tennessee is in USDA Zone 7a. The average last spring frost is April 2 and the first fall frost is October 28, giving you a growing season of approximately 209 days.

At an elevation of 1,191 feet, Dyer County receives approximately 51.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 92ยฐF, providing good warmth for Potatoes during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Potatoes root diseases.

Dyer County, TN (Zone 7a) Long season
209 days
Last Spring Frost April 2
209 growing days
First Fall Frost October 28

Dyer County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (57 days to spare)
Start indoors: Feb 5 Transplant: Apr 9 🍅 Harvest: Jun 18 – Aug 27
Recommended (50%) ✓ Fits season (55 days to spare)
Start indoors: Feb 12 Transplant: Apr 16 🍅 Harvest: Jun 25 – Sep 3
Safe Start (90%) ✓ Fits season (61 days to spare)
Start indoors: Feb 28 Transplant: May 2 🍅 Harvest: Jul 11 – Sep 19

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
Potatoes needs ~1,805 GDD — county provides 3,971 GDD Excellent fit

Potatoes Planting Timeline โ€” Dyer County, TN

Potatoes Planting Calendar

Activity When Date Range
Start Indoors February 12 Feb 12 โ€“ Feb 26
Transplant Outdoors April 16 Apr 16 โ€“ Apr 30
Direct Sow April 9 Apr 9 โ€“ Apr 30
Harvest June 25 Jun 25 โ€“ Sep 3

Plant 1" deep ยท 15" apart ยท Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

70โ€“120 days

Soil pH

5 โ€“ 6.5

USDA Zone

Zone 7a

Growing Season

209 days

Growing Tips for Dyer County

Plant seed potatoes (not grocery store potatoes) 4 inches deep in spring. Hill soil around stems as plants grow to prevent greening. Stop watering when plants die back.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Cucumber
  • Squash Summer

Level Up Your Garden

Frequently Asked Questions

When should I plant Potatoes in Dyer County, TN?

Dyer County is in Zone 7a with an average last frost of April 2. Plan your Potatoes planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Dyer County, TN?

Dyer County, Tennessee is in USDA Hardiness Zone 7a. The average last spring frost is April 2 and first fall frost is October 28.

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Plan Your Garden with Confidence

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