When To Plant Sudan Grass In Texas

When to Plant Sudangrass in Texas: The Complete Guide

The best time to plant Sudan grass in Texas is in late spring, typically from mid-April through early June, once soil temperatures reach at least 65°F.
 
This warm-season annual grass thrives in Texas heat, making timing crucial for successful germination and robust growth.
 
If you plant too early when soil is still cold, seeds can rot in the ground before they ever sprout.
 
Planting too late risks exposing young seedlings to intense summer heat and potential moisture stress before they establish strong root systems.
 
In this post, we’ll break down exactly when to plant Sudan grass in Texas by region, soil temp requirements, and best management practices for a thriving stand.
 
Let’s get your planting schedule dialed in.
 

When to Plant Sudan Grass in Texas: Timing by Region

When to plant Sudan grass in Texas depends heavily on where you live, since the Lone Star State spans multiple USDA hardiness zones and climate patterns.
 
The key is aligning your planting date with warm, stable soil temperatures and the end of frost risk in your specific area.
 

1. North Texas (Dallas-Fort Worth, Wichita Falls, Amarillo)

In North Texas, the ideal time to plant Sudan grass is from mid-May to early June.
 
This region often experiences late frosts well into April, so waiting until the soil warms naturally is essential.
 
Amarillo and the Panhandle region can even push planting into early June, as nights stay cooler longer.
 
Monitor soil temps closely in this area, as cold snaps can dip below 60°F even in late May.
 

2. Central Texas (Austin, San Antonio, Waco)

Central Texas offers a slightly earlier window, with planting Sudan grass best from late April through mid-May.
 
Soils here warm faster than in the north, and frost risk typically ends by early April.
 
You can even risk an early April planting if soil temperatures have been consistently above 65°F for several days.
 
But May is the sweet spot for most Central Texas growers seeking maximum forage yield.
 

3. South Texas (Houston, Corpus Christi, Laredo)

South Texas enjoys the earliest planting window, with Sudan grass going in from mid-April to late April.
 
The Gulf Coast region warms quickly, and soil temps often hit 70°F by early spring.
 
You can even plant in late March during warm years, but be vigilant about unexpected cold fronts.
 
This region also supports multiple cuttings, so earlier planting extends your harvest season significantly.
 

4. East and West Texas Considerations

East Texas, with its higher humidity and rainfall, follows a similar schedule to Central Texas, planting Sudan grass from late April to mid-May.
 
West Texas, including El Paso and the Trans-Pecos, sees hot days but cold nights, so wait until late May or early June.
 
The drier climate means irrigation is often necessary, so planting right before a forecasted rain event is ideal.
 
Always check your local extension office for zone-specific recommendations.
 

Critical Soil Temperature Requirements for Planting Sudan Grass

Soil temperature is the single most important factor when deciding when to plant Sudan grass in Texas.
 
This warm-season grass simply refuses to germinate in cold soil, so monitoring thermometer readings matters more than calendar dates.
 

1. Minimum Temperature of 65°F

Sudan grass seeds require soil temps of at least 65°F for reliable germination.
 
At this temperature, seeds will typically sprout within 7 to 10 days.
 
If you plant when soil is only 60°F, germination becomes erratic and slow, often taking 3 weeks or more.
 
And those delayed seedlings are far more susceptible to disease and insect damage.
 

2. Optimal Range of 68°F to 85°F

For the fastest, most uniform emergence, aim for soil temperatures between 68°F and 85°F.
 
Within this range, Sudan grass seeds germinate in just 5 to 7 days.
 
This sweet spot also promotes vigorous early root development, which is critical for drought tolerance later.
 
Check soil temps at 2 inches deep each morning for a week before planting.
 

3. Avoid Planting Below 60°F

If soil temps are below 60°F, do not plant Sudan grass in Texas.
 
Cold, wet soil is the number one cause of seed rot and poor stand establishment.
 
You’ll waste seed, time, and money while getting patchy growth that invites weeds.
 
Patience pays off, so wait an extra week or two until conditions are right.
 

Best Practices for Successful Sudan Grass Planting

Knowing when to plant Sudan grass in Texas is only half the battle, as proper field preparation maximizes your success.
 

1. Prepare a Firm, Weed-Free Seedbed

Sudan grass germinates best when seeds make good soil contact.
 
Till the field to break up clods and create a smooth, firm seedbed.
 
Remove any existing weeds at least two weeks before planting to reduce competition.
 
A cultipacker or roller can help firm the soil after tilling.
 

2. Plant at the Right Depth

Sow Sudan grass seeds at a depth of 0.5 to 1 inch.
 
Deeper planting in sandy soils helps access moisture, while shallower works better in heavy clay.
 
Seed at a rate of 25 to 35 pounds per acre for dryland, or 40 to 50 pounds if irrigated.
 
Use a grain drill for precision, or broadcast and lightly harrow.
 

3. Consider a Second Planting for Extended Grazing

Staggering your plantings every 3 to 4 weeks provides continuous forage through the summer.
 
A second planting in early July can extend grazing into September or October.
 
This works especially well in Central and South Texas where the growing season is long.
 
Just ensure adequate soil moisture for germination during the hotter months.
 

4. Fertilize Based on Soil Test Results

Sudan grass responds well to nitrogen, typically needing 50 to 100 pounds per acre.
 
Apply phosphorus and potassium according to your soil test recommendations before planting.
 
Side-dress nitrogen about 4 to 6 weeks after emergence for sustained growth.
 
Good fertility directly impacts yield and nutrient quality for grazing or hay.
 

So, When to Plant Sudan Grass in Texas?

The best time to plant Sudan grass in Texas is late spring when soil temperatures reach 65°F.
 
That means mid-April in South Texas, late April to mid-May in Central Texas, and mid-May to early June in North Texas.
 
Don’t rush the season, as cold soil leads to poor germination and wasted seed.
 
Monitor soil temps, prepare your seedbed properly, and stick to the regional windows outlined above.
 
With the right timing, you’ll enjoy lush, nutritious Sudan grass grazing from early summer through fall.
 
Happy planting, Texans.