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When to Plant Sunflower in Muscogee County, GA

Muscogee County, Georgia Zone 8b May

This month in Muscogee County, Georgia

Your garden in Muscogee County, Georgia is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost March 25
Avg. first frost November 6
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.7 hrs
  1. Get sunflower seeds going inside

    Bottom-water once the first true leaves appear — it keeps stems dry and knocks back damping-off.

Looking ahead to June
  • First harvests: sunflower

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Sunflowers are tall, cheerful annuals grown for their edible seeds and as pollinator magnets. They come in sizes from 2-foot dwarfs to 12-foot giants.

Muscogee County, Georgia is in USDA Zone 8b. The average last spring frost is March 25 and the first fall frost is November 6, giving you a growing season of approximately 226 days.

At an elevation of 380 feet, Muscogee County receives approximately 52.5 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92°F, providing good warmth for Sunflower during the growing season. Clay soil retains moisture well for Sunflower, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Sunflower root diseases.

Muscogee County, GA (Zone 8b) Long season
226 days
Last Spring Frost March 25
226 growing days
First Fall Frost November 6
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Muscogee 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 (99 days to spare)
Start indoors: Jan 23 Transplant: Mar 27 🍅 Harvest: Jun 5 – Jul 24
Recommended (50%) ✓ Fits season (93 days to spare)
Start indoors: Feb 4 Transplant: Apr 8 🍅 Harvest: Jun 17 – Aug 5
Safe Start (90%) ✓ Fits season (91 days to spare)
Start indoors: Feb 27 Transplant: May 1 🍅 Harvest: Jul 10 – Aug 28

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 Muscogee County

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

Soil pH

Your soil pH (5.5–6.6) overlaps with Sunflower's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Drainage

Sunflower prefers dry conditions but your soil drains poorly. Use raised beds or mounded rows to prevent root rot.

Organic Matter

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

How to Plant Sunflower

1"
Planting Depth
18"
Between Plants
30"
Between Rows

Succession Planting Sunflower

3
successive plantings in your 226-day season

Sow every 8 weeks. Last sowing by Jul 29 to harvest before frost.

Plant Water Budget

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

Monthly Watering Guide for Sunflower

Sunflower needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Sunflower Needs Rainfall You Supplement Action
Jan 4.4" 0" ❄️ Dormant
Feb 4" 0" ❄️ Dormant
Mar 2.2" 4.9" 0" ✅ Rainfall sufficient
Apr 2.2" 4.4" 0" ✅ Rainfall sufficient
May 2.2" 4" 0" ✅ Rainfall sufficient
Jun 2.2" 5" 0" ✅ Rainfall sufficient
Jul 2.2" 4.9" 0" ✅ Rainfall sufficient
Aug 2.2" 5" 0" ✅ Rainfall sufficient
Sep 2.2" 4.5" 0" ✅ Rainfall sufficient
Oct 2.2" 3.2" 0" ✅ Rainfall sufficient
Nov 2.2" 4.3" 0" ✅ Rainfall sufficient
Dec 3.9" 0" ❄️ Dormant

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

Sunflower 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.

Sunflower needs ~1,615 GDD — county provides 4,294 GDD Excellent fit

Sunflower Planting Timeline — Muscogee County, GA

Sunflower Planting Calendar

Activity When Date Range
Start Indoors February 4 Feb 4 – Feb 18
Transplant Outdoors April 8 Apr 8 – Apr 22
Direct Sow April 1 Apr 1 – Apr 22
Harvest June 17 Jun 17 – Aug 5

Plant 1" deep · 18" apart · Rows 30" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

70–100 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

226 days in Muscogee County

Growing Tips for Sunflower in Muscogee County

Direct sow Sunflower outdoors after March 25 in Muscogee County when soil has warmed and frost danger has passed.

With Muscogee County's clay soil (29% clay), work in 3-4 inches of compost before planting Sunflower. Avoid tilling when soil is wet to prevent compaction.

Common pests for Sunflower in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after last frost. Stake tall varieties in windy areas. Harvest seed heads when the back turns brown and seeds are plump. Dry heads upside down.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Sunflower in Muscogee County, GA?

Muscogee County is in Zone 8b with an average last frost of March 25. Plan your Sunflower planting based on this frost date — see the calendar above for exact timing.

What planting zone is Muscogee County, GA?

Muscogee County, Georgia is in USDA Hardiness Zone 8b. The average last spring frost is March 25 and first fall frost is November 6.

🌱

Your Muscogee County Garden Planner — Free

A 24-page printable planner built for Muscogee County (Zone 8b). 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 Muscogee 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.