Annual Flower

When to Plant Zinnias in Georgia

The cut-and-come-again champion. The more you cut zinnias, the more they bloom. A cottage garden essential.

The Short Answer

Zinnias are a Georgia summer staple — tough, colorful, and productive in the heat that defeats more delicate flowers. The state's long growing season means zinnia color from May through October.

Georgia Frost Dates

Your planting dates depend on which part of Georgia you're in. Here are the frost date ranges by region:

Region Zones Last Frost (Spring) First Frost (Fall)
North Georgia Mountains 6b, 7a Apr 5 - Apr 20 Oct 10 - Oct 25
Central Georgia 7b, 8a Mar 15 - Apr 1 Nov 1 - Nov 15
South Georgia 8a, 8b, 9a Feb 28 - Mar 15 Nov 10 - Nov 25

Zinnias Planting Schedule for Georgia

North Georgia Mountains (Zones 6b, 7a)

Average last frost: Apr 5 - Apr 20 · Average first frost: Oct 10 - Oct 25

Start Seeds Indoors
4 wks before frost
Transplant Outside
1 wks after frost
Direct Sow
1 wks after frost

Central Georgia (Zones 7b, 8a)

Average last frost: Mar 15 - Apr 1 · Average first frost: Nov 1 - Nov 15

Start Seeds Indoors
4 wks before frost
Transplant Outside
1 wks after frost
Direct Sow
1 wks after frost

South Georgia (Zones 8a, 8b, 9a)

Average last frost: Feb 28 - Mar 15 · Average first frost: Nov 10 - Nov 25

Start Seeds Indoors
4 wks before frost
Transplant Outside
1 wks after frost
Direct Sow
1 wks after frost

Growing Zinnias in Georgia

State-Specific Growing Tips

Direct sow from late April. Full sun. Water at the base to reduce disease. Georgia's heat and humidity promote powdery mildew but zinnias are vigorous enough to bloom through moderate infection. Deadhead regularly.

Recommended Varieties for Georgia

Benary's Giant, State Fair. Profusion for disease resistance. UGA Extension recommends zinnias as one of the easiest annual flowers.

Common Challenges in Georgia

Powdery mildew in humid conditions. Japanese beetles. Alternaria leaf spot. Despite these, zinnias are among the most productive flowers in Georgia.

Growing Tips

Water at the base to prevent powdery mildew. Cut flowers just above a leaf node to encourage more branching and blooms.

Companion Planting

Plant zinnias alongside these companions for better growth:

Tomatoes Peppers

The Bottom Line

Zinnias can be grown successfully in Georgia with proper attention to regional frost dates and local growing conditions. Timing varies across the state — North Georgia Mountains gardeners work with a last frost around Apr 5 - Apr 20, while South Georgia sees frost end around Feb 28 - Mar 15. Choose varieties suited to your region, amend your soil based on its specific needs, and monitor for the pests and diseases most common in your area. For exact dates based on your zip code, use our free planting date finder.

Related Guides

Zinnias Growing Guide National planting guide with all states Georgia Planting Calendar All plants for Georgia Zinnias in Alabama Alabama planting dates Zinnias in Alaska Alaska planting dates Zinnias in Arizona Arizona planting dates Zinnias in Arkansas Arkansas planting dates
Note: All dates are based on NOAA 30-year Climate Normals and represent historical averages, not predictions for any specific year. Always check your local weather forecast before planting frost-sensitive crops. Learn about our data sources.

Last reviewed: March 29, 2026

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