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When to Plant Sweet Potatoes in Cleburne County, AL

Sweet potatoes are a warm-season root crop that produces nutritious, sweet tubers in orange, white, and purple varieties. They need a long, hot growing season.

Cleburne County, Alabama is in USDA Zone 7b. The average last spring frost is April 1 and the first fall frost is November 1, giving you a growing season of approximately 214 days.

At an elevation of 207 feet, Cleburne County receives approximately 57.8 inches of rainfall annually with predominantly clay loam soil. Summer highs average 91ยฐF, providing good warmth for Sweet Potatoes during the growing season. Clay soil retains moisture well for Sweet Potatoes, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Sweet Potatoes root diseases.

Cleburne County, AL (Zone 7b) Long season
214 days
Last Spring Frost April 1
214 growing days
First Fall Frost November 1

Cleburne County Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (62 days to spare)
Start indoors: Feb 3 Transplant: Apr 7 🍅 Harvest: Jul 7 – Aug 25
Recommended (50%) ✓ Fits season (60 days to spare)
Start indoors: Feb 11 Transplant: Apr 15 🍅 Harvest: Jul 15 – Sep 2
Safe Start (90%) ✓ Fits season (63 days to spare)
Start indoors: Feb 28 Transplant: May 2 🍅 Harvest: Aug 1 – 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
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Sweet Potatoes needs ~1,916 GDD — county provides 3,905 GDD Excellent fit

Sweet Potatoes Planting Timeline โ€” Cleburne County, AL

Sweet Potatoes Planting Calendar

Activity When Date Range
Start Indoors February 11 Feb 11 โ€“ Feb 25
Transplant Outdoors April 15 Apr 15 โ€“ Apr 29
Direct Sow April 8 Apr 8 โ€“ Apr 29
Harvest July 15 Jul 15 โ€“ Sep 2

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 โ€”
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

90โ€“120 days

Soil pH

5.5 โ€“ 6.5

USDA Zone

Zone 7b

Growing Season

214 days

Growing Tips for Cleburne County

Plant slips (rooted sprouts) after soil is thoroughly warm. Build raised mounds for better root development. Cure harvested roots at 80-85F for 10 days to develop sweetness.

Companion Planting

Good Companions

Avoid Planting Near

  • Squash Summer

Level Up Your Garden

Frequently Asked Questions

When should I plant Sweet Potatoes in Cleburne County, AL?

Cleburne County is in Zone 7b with an average last frost of April 1. Plan your Sweet Potatoes planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Cleburne County, AL?

Cleburne County, Alabama is in USDA Hardiness Zone 7b. The average last spring frost is April 1 and first fall frost is November 1.

๐ŸŒฑ

Plan Your Garden with Confidence

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