When to fertilize your lawn in Texas
Feed when it's growing — spring and early fall, not in dormancy or peak heat.
By The T.A.P. Team · April 2024 · 5 min read
Timing matters as much as the fertilizer: feed a North Texas lawn when it's actively growing — after spring green-up and again in early fall — and avoid fertilizing during winter dormancy or the peak of summer heat, when it does little good and can even stress the grass. A soil test tells you what it actually needs. Here's a simple, season-right schedule for our warm-season grasses.
- After spring green-up (mid-spring)
- Again in early fall
- NOT during winter dormancy
- Go easy in peak summer heat
- A soil test guides what it needs
Feed when it grows
Our warm-season grasses — Bermuda, St. Augustine, and Zoysia — grow from spring through fall, so that's when they can actually use fertilizer. The two prime windows are mid-spring, once the lawn has fully greened up and is growing, and early fall, to strengthen it before winter. Feeding on that rhythm gets the most from every application.
Skip dormancy and extreme heat
Fertilizing a dormant winter lawn is wasted — the grass can't use it, and much of it washes away as runoff. And dumping high-nitrogen fertilizer on a lawn in the peak of summer heat can stress or even burn it, and push disease. When the grass is dormant or baking, hold off.
Soil test first
Before guessing at numbers, a cheap soil test tells you what your lawn actually needs — and North Texas soils are often already high in phosphorus, so blindly applying a balanced fertilizer can over-apply what's not needed. A test targets the real deficiency (usually nitrogen) and avoids waste and runoff.
How to apply it
Spread evenly with a proper spreader (overlapping passes avoid stripes), then water it in lightly. Resist the urge to over-fertilize — excess nitrogen drives fast, weak growth that invites disease and thatch, and more mowing. Steady, correctly-timed feeding beats heavy dumps.
| Timing | Fertilize? |
|---|---|
| Mid-spring (after green-up) | Yes — prime window |
| Early fall | Yes — strengthens for winter |
| Peak summer heat | Go easy / hold |
| Winter dormancy | No — wasted |
| Before a soil test | Test first |
Two things make lawn fertilizing pay off: timing it to when the grass is actively growing (mid-spring and early fall, not dormancy or peak heat), and testing your soil so you apply what's actually missing rather than a guess. That approach greens the lawn, avoids the disease and thatch that over-feeding causes, and keeps excess nutrients out of the runoff.
Feeding lawns in North Texas
Our warm-season grasses and phosphorus-rich soils make timing and a soil test especially worthwhile across Plano, Frisco, and McKinney. We build lawn-care programs matched to the season. See our landscaping team.
The short version
- Fertilize when the lawn is actively growing — mid-spring and early fall.
- Don't fertilize during winter dormancy — the grass can't use it.
- Go easy in peak summer heat; high nitrogen can stress or burn the lawn.
- Soil-test first — North Texas soils are often already high in phosphorus.
- Spread evenly, water it in, and avoid over-applying nitrogen.
- Over-feeding drives weak growth, disease, thatch, and more mowing.
Fertilizing your lawn — frequently asked questions
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