Annual Flower

When to Plant Marigolds in Texas

The ultimate companion plant. Marigolds repel pests, attract pollinators, and add cheerful color all season long.

The Short Answer

Marigolds thrive in Texas heat and are essential companion plants in Texas vegetable gardens. The flower's pest-repelling properties are particularly valuable in the state's warm conditions where insect pressure is high.

Texas Frost Dates

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

Region Zones Last Frost (Spring) First Frost (Fall)
North Texas (Dallas) 7b, 8a Mar 10 - Mar 25 Nov 5 - Nov 20
Central Texas (Austin/SA) 8a, 8b Feb 25 - Mar 15 Nov 15 - Dec 5
South Texas (Valley) 9a, 9b, 10a Jan 15 - Feb 10 Dec 10 - Jan 5
Texas Panhandle 6b, 7a Apr 10 - Apr 25 Oct 10 - Oct 25
East Texas 8a, 8b Mar 1 - Mar 20 Nov 10 - Nov 25

Marigolds Planting Schedule for Texas

North Texas (Dallas) (Zones 7b, 8a)

Average last frost: Mar 10 - Mar 25 · Average first frost: Nov 5 - Nov 20

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

Central Texas (Austin/SA) (Zones 8a, 8b)

Average last frost: Feb 25 - Mar 15 · Average first frost: Nov 15 - Dec 5

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

South Texas (Valley) (Zones 9a, 9b, 10a)

Average last frost: Jan 15 - Feb 10 · Average first frost: Dec 10 - Jan 5

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

Texas Panhandle (Zones 6b, 7a)

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

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

East Texas (Zones 8a, 8b)

Average last frost: Mar 1 - Mar 20 · Average first frost: Nov 10 - Nov 25

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

Growing Marigolds in Texas

State-Specific Growing Tips

Direct sow or transplant after last frost — as early as March in south Texas. Marigolds handle Texas's extreme heat and dry conditions. Plant among tomatoes and peppers for natural pest deterrence. Full sun. Minimal water once established.

Recommended Varieties for Texas

French marigolds for pest control. African marigolds for dramatic height. Signet marigolds for edible flowers. Any variety handles Texas conditions.

Common Challenges in Texas

Spider mites in hot, dry conditions. Marigolds are otherwise remarkably pest-free — which is ironic given their role as pest repellents for other crops.

Growing Tips

French marigolds are best for pest control in vegetable gardens. Deadhead spent flowers to keep them blooming until frost.

Companion Planting

Plant marigolds alongside these companions for better growth:

Tomatoes Peppers Squash Beans

The Bottom Line

Marigolds can be grown successfully in Texas with proper attention to regional frost dates and local growing conditions. Timing varies across the state — North Texas (Dallas) gardeners work with a last frost around Mar 10 - Mar 25, while East Texas sees frost end around Mar 1 - Mar 20. 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

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