St. Augustine is one of the most widely planted turfgrasses in Texas, particularly in urban and established neighborhoods. That comes down to one thing above all: its shade tolerance is better than any other warm-season grass we install. Combined with deep rooting and solid drought tolerance, it is usually the right answer for a yard with mature trees.
The short version
Best shade tolerance of the warm-season grasses. Do not de-thatch it. Water early and deeply. Expect browning for the first few months after installation.
Brownish or yellow spots on a newly installed lawn are completely normal for the first few months while the sod builds a root system.
Hand-water those spots with a hose in addition to running your sprinklers. Give particular attention to the edges against stone, brick, driveways, sidewalks, patios and stone mailboxes — those surfaces radiate heat long after sunset and dry the neighbouring grass much faster than open lawn.
St. Augustine handles shade well, but dense shade will still thin it out. If a large tree canopy is casting deep shade over the affected area, thinning the canopy to let more light through is the most effective fix.
An over-the-counter soil drench such as Garrett Juice Plus by Medina can help the lawn fill back in. Follow the label's recommended amounts.
Do not de-thatch St. Augustine
De-thatching is a normal part of fungus prevention on most lawns, but St. Augustine spreads by above-ground runners and de-thatching tears them up. Skip that step on this grass.
| When | What to do |
|---|---|
| Day 1 | One deep soak of the whole installation area — 30–40 minutes, longer for larger yards. |
| Weeks 1–2 | Twice daily, about 10 minutes: morning (7–9am) and evening (6–7pm). |
| Weeks 3–4 | Once daily, about 10 minutes. |
| Ongoing | About one inch of water per week from irrigation and rainfall combined. |
Walk the yard through the first 30 days rather than trusting the timer, and hand-water dry spots and edges as needed. Water before 10am where you can — it keeps the turf cooler through the hottest hours and lets the blades dry, which is how you avoid feeding fungus. About 30 minutes puts down half an inch, so 10 minutes per zone three times a week gets close to an inch.
Shady yard?
St. Augustine handles shade better than anything else we install — and where even it will not grow, we will tell you so rather than sell you sod twice.
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