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When to Plant Celeriac in Troup County, GA

Troup County, Georgia Zone 8a May

Troup County, Georgia gardeners: here's your May plan

May is a pivotal month for Troup County, Georgia gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost March 27
Avg. first frost November 3
Soil temp (4") 68°F
Watering Low
Pest pressure Moderate
Daylight 13.7 hrs
  1. Get celeriac seeds going inside

    Your window is short. These crops want several weeks of indoor growth before they go outside.

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Celeriac is a celery relative grown for its knobby, flavorful root rather than its stalks. It has a rich celery flavor and is excellent roasted, mashed, or in soups.

Troup County, Georgia is in USDA Zone 8a. The average last spring frost is March 27 and the first fall frost is November 3, giving you a growing season of approximately 221 days.

At an elevation of 489 feet, Troup County receives approximately 54.3 inches of rainfall annually with predominantly clay loam soil. Summer highs average 88°F, providing good warmth for Celeriac during the growing season. Clay soil retains moisture well for Celeriac, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Celeriac root diseases.

Troup County, GA (Zone 8a) Long season
221 days
Last Spring Frost March 27
221 growing days
First Fall Frost November 3

Troup County Soil Profile

Soil Type

Clay Loam

Soil pH

5.7-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (80 days to spare)
Start indoors: Feb 16 Transplant: Mar 23 🍅 Harvest: Jul 6 – Aug 10
Recommended (50%) ✓ Fits season (81 days to spare)
Start indoors: Feb 20 Transplant: Mar 27 🍅 Harvest: Jul 10 – Aug 14
Safe Start (90%) ✓ Fits season (74 days to spare)
Start indoors: Mar 13 Transplant: Apr 17 🍅 Harvest: Jul 31 – Sep 4

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 Troup County

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

Soil pH

Your soil pH (5.7–6.3) overlaps with Celeriac's range (6.0–7.0), though not a perfect match.

Soil Texture

The clay loam soil in Troup County is excellent for Celeriac — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.6%). Annual compost additions will help Celeriac.

How to Plant Celeriac

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

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Celeriac

Celeriac needs approximately 0.9 inches of water per week (3.9" per month). Here's how your county's rainfall compares month by month.

Month Celeriac Needs Rainfall You Supplement Action
Jan 5" 0" ❄️ Dormant
Feb 3.8" 0" ❄️ Dormant
Mar 3.9" 5.8" 0" ✅ Rainfall sufficient
Apr 3.9" 3.6" 0.3" 💧 Light watering
May 3.9" 4.2" 0" ✅ Rainfall sufficient
Jun 3.9" 5.1" 0" ✅ Rainfall sufficient
Jul 3.9" 5.4" 0" ✅ Rainfall sufficient
Aug 3.9" 5.8" 0" ✅ Rainfall sufficient
Sep 3.9" 4.3" 0" ✅ Rainfall sufficient
Oct 3.9" 3.5" 0.4" 💧 Light watering
Nov 3.9" 3.9" 0" ✅ Rainfall sufficient
Dec 3.9" 0" ❄️ Dormant

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

Celeriac 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.

Celeriac needs ~1,760 GDD — county provides 3,536 GDD Excellent fit

Celeriac Planting Timeline — Troup County, GA

Celeriac Planting Calendar

Activity When Date Range
Start Indoors February 20 Feb 20 – Mar 6
Transplant Outdoors March 27 Mar 27 – Apr 10
Direct Sow March 13 Mar 13 – Apr 3
Harvest July 10 Jul 10 – Aug 14
Fall Sowing August 25 Aug 25 – Sep 8

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Natural rainfall sufficient

📅 Days to Maturity

100–120 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

221 days in Troup County

Growing Tips for Celeriac in Troup County

Direct sow Celeriac outdoors after March 27 in Troup County when soil has warmed and frost danger has passed.

With Troup County's clay soil (26% clay), work in 3-4 inches of compost before planting Celeriac. Avoid tilling when soil is wet to prevent compaction.

Common pests for Celeriac in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 10-12 weeks before last frost. Remove side roots as they develop to encourage a single large bulb. Harvest after a light frost for best flavor.

Companion Planting

Good Companions

Avoid Planting Near

  • Carrots
  • Parsnip

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Celeriac in Troup County, GA?

Troup County is in Zone 8a with an average last frost of March 27. Plan your Celeriac planting based on this frost date — see the calendar above for exact timing.

What planting zone is Troup County, GA?

Troup County, Georgia is in USDA Hardiness Zone 8a. The average last spring frost is March 27 and first fall frost is November 3.

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Your Troup County Garden Planner — Free

A 24-page printable planner built for Troup County (Zone 8a). 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 Troup County, GA. Local conditions may vary. Last updated: May 2026.

Sources & credits

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