How do we get rid of sandburs (grassburs) in our HOA's common turf, playgrounds and dog paths?

By OurHOA · General information · Revised October 30, 2026

How HOA boards control sandburs and grassburs in common turf: thicken thin grass, time split pre-emergent treatments, pick up burs, and write the landscape contract.

Part of the HOA board handbook: vendors, projects and upkeep.

The short answer

Sandburs, also called grassburs, sandspurs or stickers, are grassy weeds that grow where turf is thin and soil is sandy and dry. The burs hurt bare feet and dog paws, and they ride on shoes, fur, tires and mowers into the next lawn. You will not mow them out, and you will not spray your way out in one summer. What works is slow and boring: 1. Map where the burs are and rank the spots people use most. 2. Thicken the turf in those spots, because thin grass is the reason the weed is there. 3. Put down a pre-emergent before the seed sprouts, and plan a second round for the fall flush. 4. Remove burs and plants by hand in play areas and along paths. 5. Keep crews from carrying burs into clean areas. UF/IFAS Extension in Taylor County says full control can take two seasons or more. Rules, product labels and your governing documents vary, so treat this as education, not legal advice.

Know the weed before you pay to treat it

Several Cenchrus species go by these names. UF/IFAS names southern sandbur and coast sandspur in Florida lawns. Texas A&M calls the Texas weed grassbur or field sandbur, and CSU uses field sandbur. For a board's purposes they behave alike. Texas A&M AgriLife Extension publication SCSC-PU-265 (September 2024) gives the biology that drives the whole plan. Each bur holds one to three seeds that stay dormant until conditions suit them. Germination starts when average daily soil temperature reaches 52 degrees F and peaks around 75 degrees F, which gives Texas two germination periods a year, spring and fall, with seed produced in both. Sandbur is usually an annual, but some plants survive the winter and act as perennials. They green up earlier, set seed sooner and are harder to kill. AgriLife's test: in winter, slice open a dead-looking plant where the crown meets the roots. Green tissue means it is still alive. UF/IFAS says southern sandbur can also behave as a perennial through mild Florida winters. This matters for the budget. A pre-emergent only stops seed. It does nothing to a plant that came back from its roots, so a lawn full of perennial clumps needs digging or a postemergent plan as well.

Fix the turf first

Every extension source says the same thing: dense, healthy grass is the main control. AgriLife says grassbur is adapted to sandy, dry soils with poor fertility, and that a well-watered, dense stand competes with it and cuts its numbers. UF/IFAS Extension in Levy County calls healthy, vigorous grass one of the best ways to crowd sandspur out. Walk the property in late summer, when burs are easy to see, and mark them on a site map. The pattern usually tells the story: irrigation heads that miss, sandy strips along sidewalks, scalped slopes, the shortcut kids take to the bus stop, the edges of a dog area. Rank each spot by how many people walk or play there. Playground edges, pool lawns and dog paths come first. Then fix what thins the grass in those spots. Get the irrigation zones checked, mow at the right height for your turf species, and fertilize to a soil test. Skip the lime. UF/IFAS says there is no evidence that raising soil pH prevents sandbur, and the Levy County agent warns that unneeded lime can hurt warm-season lawns. Mowing alone will not help. UF/IFAS says the plants grow low enough to set seed below the mower blade.

Time the pre-emergent and split it

A pre-emergent herbicide forms a barrier in the top of the soil that kills seeds as they sprout. It has to be in place and activated before germination starts. Texas. AgriLife says to apply the product and get at least 1/2 inch of rain or irrigation on it before soil temperature enters the germination window, which begins at a 52-degree average. It says split applications matter because one round will not last through both the spring and fall flushes. AgriLife points to free soil temperature data such as texmesonet.org. Florida. UF/IFAS Extension in Taylor County puts the pre-emergent window in early spring, about late February to March. Writing about Florida hayfields, UF/IFAS gives two reasons pre-emergents fail there: no rain to activate the product, and plants that came back as perennials. Both apply to lawns. Colorado. Colorado State University (CSU) Extension Fact Sheet 3.101 (reviewed August 2025) warns that pre-emergent control of field sandbur is often less satisfactory than crabgrass control, depending on the product. It ties germination of annual grassy weeds to surface soil at 55 to 60 degrees F and says to apply two to four weeks before the local germination dates. Active ingredients named across these sources include pendimethalin, prodiamine, dithiopyr, indaziflam, oryzalin and benefin combinations. AgriLife's table lists second-application intervals that run from about 30 days to four months depending on the product. The label sets the rate, the interval, the yearly maximum and which turf species tolerate it. If your crew already runs a crabgrass program, ask whether its product and timing also cover sandbur and the fall flush. Our guide on planning a crabgrass pre-emergent program covers the soil-temperature trigger and the conflicts with seeding and sod.

Escapes, hand work and keeping burs from spreading

Some plants will come through any program. AgriLife says those survivors can look like herbicide resistance, but the first thing to check is whether the application followed the label: rate, timing, watering in. For plants already up, the choices are hand removal or a postemergent herbicide. AgriLife says selective postemergent options that won't badly injure turf are limited, some only suppress the weed, and the right one depends on your grass. Glyphosate and glufosinate kill any turf they touch, so they belong only in spot work on beds or bare ground. MSMA, an old standby for grassy weeds, is labeled for golf courses and sod farms only in AgriLife's table, so it is not an option for HOA common turf. In cool-season Colorado turf, CSU names fenoxaprop-p-ethyl as a postemergent that controls field sandbur. Hand work pays off in small, high-use areas. The Levy County agent's method: - Late winter: collect mature burs with a mower bagger, or drag an old carpet remnant or blanket across the area and throw it away. - Summer: dig, hoe or pull plants. The roots are shallow and fibrous and come out easily. - Clean mowers before moving to a clean area, and don't blow burs into turf that doesn't have them. A volunteer bur pickup at the playground before school lets out is a reasonable ask. Supply leather gloves and trash bags, and bag the burs rather than leaving piles.

A sample year for a Texas community

Shift dates earlier for South Texas and Florida, and later for Colorado. - January: crew checks winter crowns for green tissue. Bagger pass or carpet drag on playgrounds and dog paths. - February to early March: first pre-emergent, watered in with 1/2 inch, before soil averages 52 degrees F. - Late spring: second round at the label interval. - Summer: monthly hand removal in ranked areas, irrigation repairs in thin spots, and mower cleaning between zones. - Late summer: a fall round, timed with the contractor to the fall germination period, if the label's yearly maximum allows it. - September: map burs, rank high-use areas, and photograph them for comparison. - October: board reviews the map and approves next year's program and budget. Dig perennial clumps. In year two, compare the new map with the old one. Spots that still have burs usually have a turf problem the herbicide can't fix.

Contract wording and license checks

Clauses the board can adapt for the landscape agreement: "Contractor shall apply a sandbur pre-emergent herbicide to the common turf areas shown on the Association's sandbur map, timed by soil temperature and watered in as the label directs, with a second application at the label interval to cover the fall germination period. Contractor shall hand-remove sandbur plants from playground borders, the dog area and walking paths monthly from May through September, shall bag mature burs and shall clean mowing equipment before entering unaffected areas. For each herbicide application, Contractor shall report the product name, EPA registration number, rate, areas treated, date and applicator license number." A motion for the minutes: "Move to approve a two-year sandbur control program for the mapped common areas, including irrigation repairs, split pre-emergent applications and monthly hand removal in high-use areas, at a cost not to exceed $____ per year." Check licenses before anyone sprays. Texas Occupations Code 1951.003 counts weed control done for pay in the business of structural pest control, and 1951.301 requires a license for that business. AgriLife notes that product choice depends on whether a pesticide applicator license is required. In Florida, Statutes 482.156(4)(a) says the limited landscape maintenance certificate does not cover applying pesticides to turf. In Colorado, the Pesticide Applicators' Act, C.R.S. title 35, article 10, requires a commercial applicator license to apply pesticides for hire. Our guide on hiring an HOA landscaping contractor covers bids and insurance.

Mistakes boards make

- Buying one spring treatment and calling it done. The fall flush reseeds the lawn. - Applying the pre-emergent after the seedlings are visible. - Skipping the water-in step on a dry spring. - Liming the lawn because a neighbor said it kills stickers. - Spraying a nonselective herbicide on a sandbur patch in the middle of good turf and leaving a bare spot for next year's seeds. - Treating the whole property every year when the burs live in four corners. - Paying for herbicide while the broken irrigation zone that thinned the grass stays broken. A notice paragraph for owners: "The board is working on sandburs in the common areas, starting with the playground, dog area and paths. Expect pre-emergent treatments in late winter and fall, irrigation repairs in thin areas and regular bur pickup in summer. Please wipe burs off shoes and pets before leaving a treated area, and report new patches to the board."

Sources

These guides are general education for HOA boards and residents, not legal, tax, or financial advice. Rules vary by state and by your community's governing documents - check with a professional for your situation.

More on pets & parking

Or browse all pets, parking & vehicles guides.