Quick Answer: The most common lawn weeds in Texas fall into three groups. Grassy weeds include crabgrass, dallisgrass, goosegrass, sandbur, King Ranch bluestem, and Johnsongrass. Yellow nutsedge is the main sedge problem. Broadleaf weeds include dandelion, henbit, spotted spurge, clover, and goathead (puncturevine). Dallisgrass and King Ranch bluestem are two of the toughest to control because both are deep-rooted perennials that spread by rhizomes, not just seed, so pulling or mowing alone won’t get rid of them.
Texas has close to a year-round growing season, which means weeds don’t take much of a break either. A warm February can bring henbit up in North Texas lawns while summer annuals like crabgrass are still dormant in the soil, and by June, Houston and San Antonio yards are fighting sandbur and dallisgrass at the same time. Knowing what you’re looking at matters here more than in most states, because a herbicide timed for a summer annual does nothing to a rhizome-spreading perennial, and vice versa.
Grassy Weeds Common in Texas Lawns
Grassy weeds are the hardest group to spot early, since they blend into turf until they’ve already spread. Texas A&M AgriLife’s AggieTurf program lists crabgrass, dallisgrass, annual bluegrass, and smutgrass among its standard grassy-weed examples for the state, and six species show up often enough in Texas lawns specifically to be worth knowing by sight.
Crabgrass (Digitaria sanguinalis)
Large crabgrass, Digitaria sanguinalis, is the summer annual most homeowners mean when they say “crabgrass.” A close relative, smooth crabgrass (Digitaria ischaemum), shows up too, but large crabgrass is the more common of the two in Texas turf. It roots at the nodes as it spreads low across the ground, with leaf blades covered in fine hair on both sides, and by midsummer it throws up finger-like seed spikes that fan out from a single point, which is the easiest way to confirm it’s crabgrass and not a desirable grass gone rangy.
It germinates when soil temperatures hit the mid-50s, usually late February through March in most of Texas, so a pre-emergent herbicide only works if it’s down before then. Miss that window and you’re managing it with post-emergent treatment and dense turf competition instead, which is slower but still effective. Our guide to getting rid of crabgrass covers both approaches in more depth, and timing the preventer correctly matters more in Texas than almost anywhere else given how early the soil warms.
Dallisgrass (Paspalum dilatatum)
Dallisgrass is arguably the single most frustrating lawn weed in Texas, and it’s one many general weed guides skip past. It’s a perennial that forms coarse, clumping patches with deep, aggressive rhizomes, according to AggieTurf, which is why pulling it rarely works. Cut a clump down and the rhizome underneath just sends up new growth days later. Its seed heads branch out in two to eight spikes from the stem, each covered in small spikelets, and the clumps themselves grow noticeably faster and coarser-textured than the turf around them, which is usually the first thing homeowners notice.
Because dallisgrass spreads by rhizome as much as by seed, a pre-emergent herbicide that stops crabgrass does very little against an established clump. Most Texas lawn care companies treat it as a spot-spray problem: selective post-emergent herbicide applied directly to each clump, repeated over a season, since one pass rarely kills the whole root system.
Goosegrass (Eleusine indica)
Goosegrass looks like crabgrass at a glance, but it grows in a tighter, more upright clump and tends to show up specifically where soil is compacted, foot traffic is heavy, or a sprinkler head leaks. AggieTurf describes its stems as flattened with a silvery-white center, and the seed heads have a distinctive zipper-like arrangement of spikelets that crabgrass doesn’t share. It’s a summer annual like crabgrass, germinating slightly later, and it’s often the weed that shows up in the exact same worn path across a lawn year after year, which is itself a diagnostic clue.
Sandbur (Cenchrus spinifex)
Sandbur is the weed Texas homeowners are most likely to meet with their bare feet before they see it. Both an annual species and the more common perennial species, Cenchrus spinifex, grow in Texas, and both produce the same sharp, spiked burs that catch in shoelaces, pet fur, and skin. It favors sandy soil and can reach up to two feet tall if left unmowed. Because the burs mature and drop seed well before most homeowners notice the plant, control works best as a two-part effort: a pre-emergent in early spring before germination, and removing any plants that do come up before their burs harden.
King Ranch Bluestem (Bothriochloa ischaemum)
This one rarely makes national weed lists because it’s a regional problem, but AggieTurf calls it one of the most common roadside and utility turfgrass weeds in Texas, and it moves from roadsides into home lawns more often than most homeowners realize. King Ranch bluestem starts as a bunching grass, then spreads by rhizomes and stolons once it’s established in mowed turf. Its seed heads form a fan-like cluster of narrow branches at the top of the stem. It’s a perennial, so like dallisgrass, mowing alone won’t remove it. It has to be spot-treated or dug out with the root system intact.
Johnsongrass (Sorghum halepense)
Johnsongrass is coarser and taller than anything else on this list, and it won’t tolerate frequent close mowing the way turfgrass does, which is actually a useful identifying trait: a patch that keeps looking ragged and tall a day or two after mowing everything else is worth a closer look. AggieTurf notes its prominent white midvein running down the top of each leaf blade, visible even from a few feet away. It spreads aggressively by rhizome and is considered a noxious weed in several states because of how difficult it is to eradicate once established, so catching it early in a Texas lawn, before it forms a dense stand, saves considerably more effort than removing it later.
Nutsedge: The Sedge Problem
Yellow nutsedge (Cyperus esculentus) gets mistaken for grass constantly, which is exactly why it spreads before anyone treats it. The giveaway is the stem: sedges have triangular, solid stems you can roll between your fingers and feel the three distinct edges, where grass stems are round and usually hollow. Yellow nutsedge spreads through tuber-tipped rhizomes below the surface, and AggieTurf notes its leaf tips taper to a fine point, distinguishing it from purple nutsedge (Cyperus rotundus), whose leaves end more bluntly. Purple nutsedge shows up in Texas too, though less often in home lawns than yellow.
Regular pre-emergent herbicides aimed at crabgrass and dallisgrass do nothing for nutsedge, since it’s not a true grass. It needs a sedge-specific herbicide, and even then, the underground tubers mean one application rarely finishes the job. Our guide to identifying and controlling nutsedge goes deeper into tuber removal and treatment timing.
Broadleaf Weeds Common in Texas Lawns
Broadleaf weeds are easier to spot than grassy ones since their leaf shape, flowers, and growth habit look nothing like turf. Five show up consistently across Texas lawns.
Dandelion (Taraxacum officinale)
The bright yellow flower and puffball seed head make dandelion the most recognizable weed on this list, and its deep taproot is why pulling the visible leaves rarely finishes the job. A single plant can produce thousands of seeds, and a taproot fragment left in the soil will regrow. Hand-digging with a weeding tool that gets under the full root, done before the seed head forms, works better than pulling by hand.
Henbit (Lamium amplexicaule)
Henbit is a winter annual, which sets it apart from most of the summer grassy weeds on this list. It shows up in cooler months, identifiable by square stems, triangular scalloped leaves, and small pink to purple flowers clustered near the top of the plant. Because it germinates in fall and grows through winter into early spring, a spring-only weed control routine misses it entirely. Dense, healthy turf is the best long-term defense, since henbit struggles to establish in thick grass.
Spotted Spurge (Chamaesyce maculata)
Spotted spurge grows flat against the ground in a prostrate mat, and the fastest way to confirm the ID is to snap a stem. If it oozes a milky white sap, it’s spurge. AggieTurf notes the small oval leaves often carry a reddish spot near the center vein, which is where the “spotted” name comes from. It’s a summer annual that thrives in compacted soil and thin turf, and like most of the weeds here, dense grass is a better long-term fix than repeated spot treatment.
Clover (Trifolium spp.)
Clover is the one weed on this list with a real upside: it fixes nitrogen in the soil, which can genuinely benefit surrounding turf. That’s part of why some homeowners leave it alone or even seed it deliberately. But left unchecked, its trifoliate leaves and low, spreading growth via stolons will outcompete thin turf over time, and its drought tolerance means it often outlasts grass through a dry Texas summer. Whether to treat it comes down to whether you want a uniform lawn or don’t mind the mix; our guide to killing clover covers removal if you’d rather not have it.
Goathead / Puncturevine (Tribulus terrestris)
Goathead earns its name honestly. Its spiny seed pods are hard enough to puncture a bike tire and sharp enough to hurt bare feet, which makes it one of the few weeds on this list that’s a physical hazard as much as a lawn nuisance. It grows low and spreading in hot, dry, compacted soil, exactly the conditions found in a lot of Texas yards by midsummer, with small yellow flowers that give way to those spiked seed pods. The seeds stay viable in soil for years, so a single missed season of pods can mean goathead coming back well after you thought it was gone.
A Few Others You Might See
Chickweed and ground ivy both show up in smaller numbers than the weeds above, and both favor the same kind of spot: cool, moist, shaded ground where turf is already struggling. Chickweed forms dense mats of egg-shaped leaves with tiny white star-shaped flowers, while ground ivy spreads through creeping stems and rounded, scalloped leaves. Purslane is the odd one out here, a low succulent with glossy fleshy leaves that shrugs off the kind of heat and drought that kills everything else on this list, which is exactly why it tends to show up in the driest, most neglected corner of a yard in August. None of the three are as widespread in Texas as dallisgrass or crabgrass, but worth recognizing if they turn up.
Grassy, Broadleaf, or Sedge: Telling Them Apart Fast
Before treating anything, confirm which of the three broad categories you’re dealing with, since the wrong herbicide type wastes both money and a treatment window.
| Category | Stem | Leaf Veins | Example |
|---|---|---|---|
| Grassy weed | Round, often hollow | Parallel | Crabgrass, dallisgrass |
| Broadleaf weed | Solid, variable shape | Netted | Dandelion, clover |
| Sedge | Solid, triangular | Parallel | Yellow nutsedge |
Roll the stem between two fingers. Three distinct edges means sedge. Round and hollow means grass. Anything else with visibly branching leaf veins is broadleaf.
What Makes a Texas Lawn Weed-Prone
Texas’s combination of clay-heavy soil in much of the north and central regions, sandy soil along the coast and in the east, and a growing season that barely pauses gives weeds more windows to establish than turf gets to recover. Compacted soil, whether from foot traffic, parking, or heavy clay that doesn’t drain, is the single biggest factor behind goosegrass, King Ranch bluestem, and goathead specifically, since all three tolerate compaction that most turfgrass can’t. A thin, stressed lawn from summer heat is exactly when dallisgrass and crabgrass get their opening, which is part of why timing grass seed correctly for Texas and keeping turf dense matters as much as any herbicide.
When to Call a Pro
Most annual weeds respond to pre-emergent timing and consistent mowing height. Dallisgrass and King Ranch bluestem are the two exceptions worth flagging early, since their rhizome systems mean a homeowner spraying the visible clump often leaves enough root behind for it to return within a month. If a lawn has more than a few scattered clumps of either, or if nutsedge has spread across a significant section rather than a small patch, a professional treatment plan timed to the right herbicide and season is usually faster and cheaper in the long run than repeated DIY rounds. LawnGuru’s weeding service connects you with a local pro who can spot-treat the tough perennials and handle the rest of the yard at the same time.
FAQ
What is the most common lawn weed in Texas?
Crabgrass and dallisgrass are the two most frequently reported grassy weeds in Texas lawns, with dandelion and clover the most common broadleaf weeds. Which one dominates a specific yard depends heavily on soil type and how compacted the ground is.
Is King Ranch bluestem actually a problem in home lawns, not just roadsides?
Yes. Texas A&M’s AggieTurf program specifically lists it as one of the state’s most common turfgrass weeds, not just a roadside grass, and it moves into home lawns readily once established nearby.
How is dallisgrass different from crabgrass?
Dallisgrass is a perennial that spreads by deep rhizomes and comes back from the root even after the visible clump is removed. Crabgrass is a summer annual that dies each winter and regrows only from seed, which is why a pre-emergent herbicide works well on crabgrass but does little against an established dallisgrass clump.
Do I have a grass weed or a sedge?
Roll the stem between your fingers. A triangular stem with distinct edges is a sedge, like nutsedge. A round, usually hollow stem is a true grass, like crabgrass or dallisgrass. This matters because sedge herbicides and grass herbicides target different plant biology and generally don’t cross over.
When should I put down pre-emergent herbicide in Texas?
Late February through March for most of the state, once soil temperatures reach the mid-50s, which is when crabgrass and other summer annual grassy weeds germinate. Waiting until weeds are already visible means the pre-emergent window has passed.
