Buffalo Grass Low-Input Lawn: Weed Control and Fertilization in DFW

Buffalo grass is having a quiet revival in North Texas, and it’s easy to understand why. When you’re looking at summer water bills that rival a car payment, the idea of a native grass that thrives on rainfall alone sounds like the smartest decision you’ve ever made for your yard. But “low-input” doesn’t mean “no input.” Buffalo grass has specific fertilization and weed control needs, and getting them wrong can flip this low-maintenance dream into a weed-choked nightmare faster than you’d expect. Here’s how to keep buffalo grass looking sharp in the DFW climate.

What Makes Buffalo Grass Different

Buffalo grass (Bouteloua dactyloides) is a native warm-season short-grass prairie species that evolved in the Southern Plains. It spreads via stolons, produces a fine-textured silver-green turf, goes dormant in winter, and genuinely thrives in DFW’s alkaline clay soils with minimal irrigation once established. It grows slowly — which is both its blessing (less mowing) and its curse (slow to outcompete weeds when it thins). It also maxes out at about 4–6 inches naturally, so some homeowners skip mowing almost entirely.

The trade-off for all this toughness: buffalo grass is finicky about being over-loved. Too much fertilizer and it grows rank, loses its compact form, and becomes vulnerable to disease. Too much water and it loses its drought-hardened advantage and invites weed pressure. The goal is restraint with precision.

Fertilization: Less Is Genuinely More

Buffalo grass needs far less nitrogen than Bermuda or St. Augustine. Over-fertilizing — especially with high-nitrogen products — pushes excessive top growth, weakens the plant, and can invite disease and weeds. Here’s a sensible DFW calendar:

• Late April – May: Apply a light nitrogen application (1–1.5 lbs actual nitrogen per 1,000 sq ft) as the grass fully green-ups and temperatures consistently hit 70°F. This is usually the only fertilizer application buffalo grass needs per year.
• July (optional): If growth looks thin or color is fading, a very light second application can be added — but keep it minimal. Many buffalo grass lawns skip this entirely.
• Fall and winter: No fertilizer. Buffalo grass is slowing down heading into dormancy. Late nitrogen pushes soft growth vulnerable to early freezes and does nothing to improve spring green-up.

Slow-release fertilizer formulations are especially helpful on buffalo grass — they prevent the flush of tender growth that high-nitrogen quick-release products can cause.

Weed Pressure: The Real Challenge

Despite its toughness, buffalo grass’s slow growth rate and open canopy make it vulnerable to weed invasion — particularly in thin or newly established areas. Common invaders in DFW buffalo grass lawns include:

• Crabgrass and other summer annuals: Move in aggressively during July and August if the turf thins from drought or foot traffic.
• Dallis grass and Bermuda grass: Bermuda is buffalo grass’s biggest enemy — it spreads by runners into buffalo grass stands and is extremely difficult to remove without injuring the buffalo grass.
• Winter annuals: Henbit, annual bluegrass, and chickweed exploit the dormant period when buffalo grass isn’t competing.
• Broadleaf weeds: Dandelion, clover, and thistle love the open canopy of a thin buffalo grass stand.

Weed Control Products and Buffalo Grass Tolerance

This is where buffalo grass separates itself from other warm-season grasses, and where mistakes get expensive:

• Pre-emergent for crabgrass: Apply prodiamine or pendimethalin in early March when soil temps approach 55°F. This is safe and effective on established buffalo grass. Do not apply when overseeding or plugging new areas.
• Broadleaf control: Most broadleaf herbicides containing 2,4-D are safe on established buffalo grass. Apply in fall or early spring when broadleaf weeds are actively growing and temperatures are mild.
• Bermuda grass invasion: This is the hard one. Fluazifop (Fusilade II) has some selective activity against Bermuda in buffalo grass but must be used carefully and may require multiple applications. Full Bermuda removal often requires a targeted renovation plan.
• Atrazine: Can be used on buffalo grass for winter weed control, but use at conservative rates — high application rates can injure the turf.

Irrigation and Buffalo Grass: Don’t Overdo It

Once established (typically 1–2 growing seasons), buffalo grass can survive on DFW’s natural rainfall in most years. Supplemental irrigation should be reserved for extended droughts when the grass shows signs of wilt or fails to recover from footprint marks. Over-irrigating encourages weeds, weakens buffalo grass’s competitive edge, and defeats the whole purpose of planting it.

During establishment, however, regular watering is critical — buffalo grass plugs or seed need consistent moisture to root in and spread. This is also the most vulnerable period for weed invasion, so pre-emergent timing and early broadleaf control are essential during year one.

Mowing Height and Frequency

Buffalo grass looks best and competes best with weeds when maintained at 3–4 inches. Cutting too short stresses the plant and opens the canopy to weed invasion. Most homeowners mow every 2–3 weeks in the growing season, tapering off to monthly or less as summer slows growth. Leave clippings — they return nutrients and shade the soil.

When You Need Professional Help

Buffalo grass is forgiving of neglect but unforgiving of the wrong product. Selecting herbicides that are safe for this unique grass species while still hammering the weeds takes experience with native turf systems, not just a standard warm-season spray program. Our weed control and fertilizer service identifies your specific grass type before we recommend any treatment — because spraying buffalo grass with a Bermuda program can ruin it. For more background on how grass variety changes the treatment approach, read our post on tall fescue weed control and fertilization differences in North Texas.