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When to Plant Amaranth in Toombs County, GA

Toombs County, Georgia Zone 9a May

Your May gardening checklist

If you only do a handful of things in the garden this May, make it these. They're sequenced around your zone's frost timing.

Avg. last frost March 7
Avg. first frost November 22
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
June prep starts now
  • First harvests: amaranth

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Amaranth is an ancient grain crop with edible leaves and seeds, rich in protein and micronutrients. It thrives in warm conditions and is drought-tolerant once established.

Toombs County, Georgia is in USDA Zone 9a. The average last spring frost is March 7 and the first fall frost is November 22, giving you a growing season of approximately 260 days.

At an elevation of 283 feet, Toombs County receives approximately 59.8 inches of rainfall annually with predominantly clay loam soil. Summer highs average 93°F, providing good warmth for Amaranth during the growing season. Clay soil retains moisture well for Amaranth, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Amaranth root diseases.

Toombs County, GA (Zone 9a) Long season
260 days
Last Spring Frost March 7
260 growing days
First Fall Frost November 22

Toombs County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (114 days to spare)
Start indoors: Jan 17 Transplant: Mar 7 🍅 Harvest: Jun 6 – Jul 25
Recommended (50%) ✓ Fits season (113 days to spare)
Start indoors: Jan 24 Transplant: Mar 14 🍅 Harvest: Jun 13 – Aug 1
Safe Start (90%) ✓ Fits season (111 days to spare)
Start indoors: Feb 12 Transplant: Apr 2 🍅 Harvest: Jul 2 – Aug 20

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 Toombs County

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

Soil pH

Your soil pH (5.3–6.8) overlaps with Amaranth's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.3%). Annual compost additions will help Amaranth.

How to Plant Amaranth

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

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 79 gal / 100 sq ft

Monthly Watering Guide for Amaranth

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

Month Amaranth Needs Rainfall You Supplement Action
Jan 4.6" 0" ❄️ Dormant
Feb 5.4" 0" ❄️ Dormant
Mar 4.3" 5.1" 0" ✅ Rainfall sufficient
Apr 4.3" 4.1" 0.2" 💧 Light watering
May 4.3" 5.1" 0" ✅ Rainfall sufficient
Jun 4.3" 5.1" 0" ✅ Rainfall sufficient
Jul 4.3" 5.6" 0" ✅ Rainfall sufficient
Aug 4.3" 5.1" 0" ✅ Rainfall sufficient
Sep 4.3" 4.9" 0" ✅ Rainfall sufficient
Oct 4.3" 4.4" 0" ✅ Rainfall sufficient
Nov 4.3" 5.3" 0" ✅ Rainfall sufficient
Dec 4.9" 0" ❄️ Dormant

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

Amaranth 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.

Amaranth needs ~2,074 GDD — county provides 5,135 GDD Excellent fit

Amaranth Planting Timeline — Toombs County, GA

Amaranth Planting Calendar

Activity When Date Range
Start Indoors January 24 Jan 24 – Feb 7
Transplant Outdoors March 14 Mar 14 – Mar 28
Direct Sow March 7 Mar 7 – Mar 28
Harvest June 13 Jun 13 – Aug 1

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
June Harvest
July Harvest
August Harvest
September
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 9a

📆 Growing Season

260 days in Toombs County

Growing Tips for Amaranth in Toombs County

Direct sow Amaranth outdoors after March 07 in Toombs County when soil has warmed and frost danger has passed.

With Toombs County's clay soil (33% clay), work in 3-4 inches of compost before planting Amaranth. Avoid tilling when soil is wet to prevent compaction.

General growing tips

Direct sow after last frost when soil is warm. Thin seedlings to 18 inches apart. Harvest leaves when young and tender; harvest seeds when flower heads begin to dry.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Amaranth in Toombs County, GA?

Toombs County is in Zone 9a with an average last frost of March 7. Plan your Amaranth planting based on this frost date — see the calendar above for exact timing.

What planting zone is Toombs County, GA?

Toombs County, Georgia is in USDA Hardiness Zone 9a. The average last spring frost is March 7 and first fall frost is November 22.

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Your Toombs County Garden Planner — Free

A 24-page printable planner built for Toombs 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 Toombs County, GA. Local conditions may vary. Last updated: May 2026.

Sources & credits

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