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When to Plant Sunflower in Carroll County, GA

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.

Carroll County, Georgia is in USDA Zone 7b. The average last spring frost is March 31 and the first fall frost is November 1, giving you a growing season of approximately 215 days.

At an elevation of 264 feet, Carroll County receives approximately 57 inches of rainfall annually with predominantly clay loam soil. Summer highs average 93ยฐF, 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.

Carroll County, GA (Zone 7b) Long season
215 days
Last Spring Frost March 31
215 growing days
First Fall Frost November 1

Carroll County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (84 days to spare)
Start indoors: Feb 2 Transplant: Apr 6 🍅 Harvest: Jun 15 – Aug 3
Recommended (50%) ✓ Fits season (82 days to spare)
Start indoors: Feb 10 Transplant: Apr 14 🍅 Harvest: Jun 23 – Aug 11
Safe Start (90%) ✓ Fits season (87 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 Carroll County

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

Soil pH

Your soil pH (5.6โ€“6.4) overlaps with Sunflower's range (6.0โ€“7.5), though not a perfect match.

Soil Texture

The clay loam soil in Carroll County is excellent for Sunflower โ€” good drainage, moisture retention, and nutrient holding capacity.

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 215-day season

Sow every 8 weeks. Last sowing by Jul 24 to harvest before frost.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Sunflower needs ~1,679 GDD — county provides 4,246 GDD Excellent fit

Sunflower Planting Timeline โ€” Carroll County, GA

Sunflower Planting Calendar

Activity When Date Range
Start Indoors February 10 Feb 10 โ€“ Feb 24
Transplant Outdoors April 14 Apr 14 โ€“ Apr 28
Direct Sow April 7 Apr 7 โ€“ Apr 28
Harvest June 23 Jun 23 โ€“ Aug 11

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.5"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

70โ€“100 days

๐Ÿงช Soil pH

Needs 6โ€“7.5 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 7b

๐Ÿ“† Growing Season

215 days in Carroll County

Growing Tips for Sunflower in Carroll County

Direct sow Sunflower outdoors after March 31 in Carroll County when soil has warmed and frost danger has passed.

With Carroll County's clay soil (34% 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

Level Up Your Garden

Frequently Asked Questions

When should I plant Sunflower in Carroll County, GA?

Carroll County is in Zone 7b with an average last frost of March 31. Plan your Sunflower planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Carroll County, GA?

Carroll County, Georgia is in USDA Hardiness Zone 7b. The average last spring frost is March 31 and first fall frost is November 1.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Carroll County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Carroll County, GA. Local conditions may vary. Last updated: April 2026.