Annual Flower

When to Plant Sunflowers in Mississippi

Few things bring more joy than a row of sunflowers turning their faces to the sun. Easy, dramatic, and pollinator-friendly.

The Short Answer

In Mississippi, plant sunflowers based on your regional frost dates. Northern Mississippi has a last frost around Mar 15 - Apr 1, while Southern Mississippi sees frost end around Feb 15 - Mar 5. Long growing season. Hot, humid summers. Mild winters. Two-season gardening possible.

Mississippi Frost Dates

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

Region Zones Last Frost (Spring) First Frost (Fall)
Northern Mississippi 7b, 8a Mar 15 - Apr 1 Nov 1 - Nov 15
Central Mississippi 8a, 8b Mar 1 - Mar 15 Nov 10 - Nov 25
Southern Mississippi 8b, 9a Feb 15 - Mar 5 Nov 15 - Dec 5

Sunflowers Planting Schedule for Mississippi

Northern Mississippi (Zones 7b, 8a)

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

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

Central Mississippi (Zones 8a, 8b)

Average last frost: Mar 1 - Mar 15 · Average first frost: Nov 10 - Nov 25

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

Southern Mississippi (Zones 8b, 9a)

Average last frost: Feb 15 - Mar 5 · Average first frost: Nov 15 - Dec 5

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

Growing Sunflowers in Mississippi

Sunflowers in Mississippi's Climate

Sunflowers love your heat and long days. Plant earlier than northern growers — from mid-March in many warm-zone areas. The intense sun produces vibrant colors and sturdy stalks. Multiple succession plantings can provide sunflower blooms from May through November.

Soil Considerations for Mississippi

Rich delta soils in west. Heavy clay in many areas. Sandy in pine belt. Acidic throughout. Make sure soil has warmed to at least 55°F before planting sunflowers outside.

Mississippi Climate & Growing Season

Long growing season. Hot, humid summers. Mild winters. Two-season gardening possible. Sunflowers cannot tolerate any frost, so wait until all frost danger has passed before transplanting outside. Watch local forecasts carefully in spring.

Growing season length varies across Mississippi: Northern Mississippi (7b, 8a) has a last frost around Mar 15 - Apr 1, while Southern Mississippi (8b, 9a) sees frost end around Feb 15 - Mar 5. This difference matters for sunflowers — transplant timing shifts by several weeks across the state.

Growing Tips

Direct sow is preferred — sunflowers don't love transplanting. Succession plant every 2 weeks for blooms all summer.

Companion Planting

Plant sunflowers alongside these companions for better growth:

Cucumbers Squash Corn

Keep sunflowers away from:

Potatoes

The Bottom Line

Sunflowers can be grown successfully across Mississippi, but your exact planting dates depend on which region you're in. Northern Mississippi gardeners should plan around a Mar 15 - Apr 1 last frost, while those in Southern Mississippi can typically plant earlier. For exact dates based on your zip code, use our free planting date finder.

Related Guides

Sunflowers Growing Guide National planting guide with all states Mississippi Planting Calendar All plants for Mississippi Sunflowers in Alabama Alabama planting dates Sunflowers in Alaska Alaska planting dates Sunflowers in Arizona Arizona planting dates Sunflowers 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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