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The best time to plant yellow squash in Texas is from March through May for most of the state, with a second planting window from August through September for a fall harvest.
Timing matters more than almost anything else with yellow squash because this warm-season crop hates the cold and sulks in extreme heat.
If you’ve been wondering when to plant yellow squash in Texas, the answer really depends on where you live in this massive state.
In this post, we’ll break down exactly when to plant yellow squash in Texas by region, plus a few tips to keep your plants thriving.
Let’s dig in.
When to Plant Yellow Squash in Texas
Knowing when to plant yellow squash in Texas comes down to soil temperature and your local frost dates.
Yellow squash seeds germinate best when the soil is at least 60°F, and the plants grow fastest between 65°F and 75°F.
Plant too early and cold soil will rot your seeds before they sprout.
Plant too late and the summer heat will cause flowers to drop without setting fruit.
That sweet spot is why most Texas gardeners plant yellow squash in early spring and again in late summer.
1. North Texas (Dallas, Fort Worth, Wichita Falls)
In North Texas, plant yellow squash from late March to mid-May once the danger of frost has passed.
Your last frost usually falls between March 15 and March 30.
For a fall crop, plant yellow squash again in August so the plants mature before the first freeze in November.
2. Central Texas (Austin, San Antonio, Waco)
Central Texas gardeners can plant yellow squash a bit earlier, usually from early March through April.
The last frost here typically happens in early to mid-March.
Fall planting works well too, so aim to put seeds in the ground by late August or early September.
3. East Texas (Tyler, Texarkana, Nacogdoches)
East Texas has more humidity and rainfall, but the planting window is similar to North Texas.
Plant yellow squash from late March through May, and watch for fungal issues since moisture lingers.
A fall planting in August gives you a second chance at a harvest before cool weather arrives.
4. South Texas (Houston, Corpus Christi, Brownsville)
South Texas has the earliest planting window in the state.
You can plant yellow squash as early as February in some years since frost is rare along the coast.
But the intense summer heat shuts down production fast, so many growers plant yellow squash in fall instead, from September through October.
5. West Texas (Lubbock, Midland, El Paso)
West Texas has a shorter growing season thanks to late frosts and early freezes.
Wait until mid-April to plant yellow squash, once the soil has warmed consistently.
Fall planting is possible in August, but keep an eye on early cold snaps in October.
Spring vs. Fall Planting for Yellow Squash in Texas
Most Texas gardeners focus on spring when planting yellow squash, but fall deserves a spot on your calendar too.
Spring planting takes advantage of mild temperatures and long days.
Fall planting avoids the worst of the summer heat and often produces fewer pests.
The catch with fall is timing.
You need to plant yellow squash early enough that the plants produce before the first frost but late enough that the summer heat has broken.
That’s why late August through September is the sweet spot for most of the state.
Tips for Planting Yellow Squash in Texas
Once you know when to plant yellow squash in Texas, a few smart habits will boost your harvest.
1. Warm Up the Soil First
Yellow squash seeds need warm soil to germinate, so don’t rush the season.
Black plastic mulch can raise soil temperature by several degrees and let you plant a week or two earlier.
2. Plant in Full Sun
Yellow squash needs at least six to eight hours of direct sun daily.
In Texas, a little afternoon shade actually helps in late spring since it protects plants from scorching heat.
3. Space Plants Properly
Give each yellow squash plant about 36 inches of space in rows 4 to 6 feet apart.
Good airflow reduces powdery mildew, which is a common problem in humid Texas gardens.
4. Water Consistently
Yellow squash needs steady moisture, especially once flowers appear.
Aim for about an inch of water per week, and water at the base to keep leaves dry.
5. Watch for Pests Early
Squash bugs and vine borers love Texas yellow squash.
Check the undersides of leaves weekly and act fast if you spot eggs or nymphs.
So, When to Plant Yellow Squash in Texas?
When to plant yellow squash in Texas depends on your region, but the sweet spot is March through May for spring and August through September for fall.
North and East Texas follow a similar schedule, while South Texas can start earlier and West Texas needs to wait for warmer soil.
Get the timing right when you plant yellow squash in Texas, and you’ll be rewarded with a steady supply of tender, delicious squash all season long.