If you've ever put down fertilizer in February because the bag was on sale, you've probably fed more weeds than grass. North Texas lawns — mostly Bermuda and St. Augustine — don't wake up from winter dormancy until the soil warms up, usually well into spring, and feeding a dormant lawn just gives winter weeds a head start.
Wait for full green-up, not the calendar
The first fertilizer round should go down after your lawn has fully greened up, not on a fixed date. In Johnson County and the surrounding DFW suburbs, that's typically mid-to-late April, but it shifts a bit year to year depending on how late the last freeze runs. If you fertilize before the lawn is actively growing, most of that nitrogen either washes away or feeds cool-season weeds instead of your grass.
A realistic North Texas fertilization calendar
Most lawns in our service area do well on 5-7 rounds a year: a first feeding at full green-up (mid-to-late April), rounds roughly every 6-8 weeks through the growing season, and a lighter fall application before dormancy sets in. Skip fertilizing entirely in winter — a dormant lawn can't use the nitrogen, and it's more likely to just run off or feed weeds.
Bermuda handles a slightly more aggressive summer feeding schedule than St. Augustine does. St. Augustine is more heat- and drought-sensitive, and pushing too much nitrogen on it during a 100°F stretch can actually trigger burn or invite fungus like brown patch. If your yard has a mix of both — common in older neighborhoods where St. Augustine was original and Bermuda has crept in from the sunnier areas — we schedule around whichever grass dominates the visible parts of the lawn.
Why clay soil changes the math
Heavy clay, common throughout Johnson County and the southwest DFW suburbs, holds onto some nutrients differently than sandy or loam soil. That's part of why a generic national fertilizer program — built around a different soil profile — can underperform here even applied at the right rate. Slow-release formulations tend to work better in our clay than fast-release options that can leach or run off before the lawn absorbs them.
The bottom line
Feed based on green-up, not the calendar. Back off nitrogen on St. Augustine during peak summer heat. And don't fertilize a dormant lawn in winter — you're just feeding next spring's weeds. If you'd rather not track all of this yourself, that's exactly what our lawn fertilization program is built to handle.