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When to plant Potatoes in Thomas County County,

Plant Potatoes in Thomas County County from March 4 to March 25 in spring. Thomas County County sits in USDA Zone 9a, with last frost around March 4 and first frost on November 22.

When to Plant Potatoes in Thomas County, GA

Potatoes
Thomas County, Georgia Zone 9a June

June in Thomas County, Georgia — your action list

Each item below is timed to Thomas County, Georgia's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost March 4
Avg. first frost November 22
Soil temp (4") 81°F
Watering Low
Pest pressure High
Daylight 14 hrs
  1. Pick potatoes

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

A few tasks this June that'll pay off in July
  • First harvests: potatoes

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

Thomas County, Georgia is in USDA Zone 9a. The average last spring frost is March 4 and the first fall frost is November 22, giving you a growing season of approximately 263 days.

At an elevation of 302 feet, Thomas County receives approximately 58.3 inches of rainfall annually with predominantly clay loam soil. Summer highs average 95°F, so Potatoes may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Potatoes, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Potatoes root diseases.

Thomas County, GA (Zone 9a) Long season
263 days
Last Spring Frost March 4
263 growing days
First Fall Frost November 22

Thomas County Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.5

Drainage

Well Drained

Potatoes Planting Risk Windows

Early Start (70% safe) ✓ Fits season (120 days to spare)
Start indoors: Jan 10 Transplant: Feb 28 🍅 Harvest: May 9 – Jul 18
Recommended (50%) ✓ Fits season (116 days to spare)
Start indoors: Jan 21 Transplant: Mar 11 🍅 Harvest: May 20 – Jul 29
Safe Start (90%) ✓ Fits season (119 days to spare)
Start indoors: Feb 11 Transplant: Apr 1 🍅 Harvest: Jun 10 – Aug 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.

Soil Compatibility in Thomas County

How your county's soil matches Potatoes's growing requirements.

Soil pH

Your soil pH (5.5–6.5) is within Potatoes's preferred range (5.0–6.5).

Soil Texture

Your soil has 31% clay, which can cause forked or stunted roots for Potatoes. Use raised beds with loose, sandy mix for best results.

Organic Matter

Organic matter is moderate (2.7%). Annual compost additions will help Potatoes.

How to Plant Potatoes

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Succession Planting Potatoes

4
successive plantings in your 263-day season

Sow every 8 weeks. Last sowing by Jul 25 to harvest before frost.

Potatoes Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 161 gal / 100 sq ft

Monthly Watering Guide for Potatoes

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

Month Potatoes Needs Rainfall You Supplement Action
Jan 4.9" 0" ❄️ Dormant
Feb 4.8" 0" ❄️ Dormant
Mar 4.3" 6" 0" ✅ Rainfall sufficient
Apr 4.3" 4.6" 0" ✅ Rainfall sufficient
May 4.3" 4.1" 0.2" 💧 Light watering
Jun 4.3" 4.6" 0" ✅ Rainfall sufficient
Jul 4.3" 6" 0" ✅ Rainfall sufficient
Aug 4.3" 5.5" 0" ✅ Rainfall sufficient
Sep 4.3" 4.7" 0" ✅ Rainfall sufficient
Oct 4.3" 3.4" 0.9" 💧 Light watering
Nov 4.3" 4.9" 0" ✅ Rainfall sufficient
Dec 4.9" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Thomas County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Potatoes Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Potatoes needs ~2,019 GDD — county provides 5,588 GDD Excellent fit

Potatoes Planting Timeline — Thomas County, GA

Potatoes Planting Calendar

Activity When Date Range
Start Indoors January 21 Jan 21 – Feb 4
Transplant Outdoors March 11 Mar 11 – Mar 25
Direct Sow March 4 Mar 4 – Mar 25
Harvest May 20 May 20 – Jul 29

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

70–120 days

🧪 Soil pH

Needs 5–6.5 · Your soil: ideal

🗺️ USDA Zone

Zone 9a

📆 Growing Season

263 days in Thomas County

Growing Tips for Potatoes in Thomas County

Direct sow Potatoes outdoors after March 04 in Thomas County when soil has warmed and frost danger has passed.

With Thomas County's clay soil (31% clay), work in 3-4 inches of compost before planting Potatoes. Avoid tilling when soil is wet to prevent compaction.

Common pests for Potatoes in this region include tomato hornworm and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Potatoes in Thomas County, GA?

Thomas County is in Zone 9a with an average last frost of March 4. Plan your Potatoes planting based on this frost date — see the calendar above for exact timing.

What planting zone is Thomas County, GA?

Thomas County, Georgia is in USDA Hardiness Zone 9a. The average last spring frost is March 4 and first fall frost is November 22.

When should I plant Potatoes in Thomas County County, ?

In Thomas County County, , plant Potatoes after the last frost (around March 4) and before the first frost (around November 22). Best results when soil holds above 50°F.

What growing zone is Thomas County County, for Potatoes?

Thomas County County sits in USDA Zone 9a. Potatoes grows reliably in zones 3a through 10b, so it's a good fit here.

Can Potatoes grow in Thomas County County's climate?

Yes — Potatoes grows well in Thomas County County's temperate climate. Thomas County County averages a 263-day frost-free season, with last frost around March 4 and first frost around November 22.

🌱

Your Thomas County Garden Planner — Free

A 22-page printable planner built for Thomas County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Thomas County, GA. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.