How to Get Rid of Virginia Buttonweed Without Ruining Your Lawn

If you’ve ever looked out at your lawn and noticed a low-growing weed with tiny white flowers and stems that seem impossible to pull out completely, chances are you’re dealing with Virginia buttonweed. And if you’ve already tried mowing it lower, pulling it by hand, or spraying a random weed killer from the hardware store… you’ve probably learned the hard way that this weed doesn’t quit easily.

The good news? You can get rid of Virginia buttonweed without destroying your grass — but timing, herbicide choice, and lawn type matter a whole lot.

This guide covers:

• What Virginia buttonweed is

• Why it’s so hard to kill

• The best postemergence herbicide options for Virginia buttonweed

• Virginia buttonweed control in Fescue

• Virginia buttonweed control in St. Augustine

• How to prevent it from coming back.

What Is Virginia Buttonweed? 

Virginia Buttonweed (Diodia virginiana) is a perennial broadleaf weed commonly found in warm, humid regions of the United States. It is sometimes also called largeflower buttonweed, false buttonweed, or roughleaf buttonweed. 

It is not the same weed as Florida buttonweed, hairy buttonweed, or tropical buttonweed. It’s important to make the distinction because herbicide recommendations vary between species.

You’ll usually recognize Virginia buttonweed by:

• Dark green waxy leaves

• Stems that spread horizontally across the lawn

• Small white star-shaped flowers

• Thick mat-like growth

• Roots forming at stem joints.

And that last point is exactly why this weed is such a nightmare.

Every little node along the stem can root into the soil and create a brand-new plant. So if you pull it carelessly or mow over mature plants repeatedly, you can accidentally help spread it further.

Why Virginia Buttonweed Is So Difficult to Kill

Virginia buttonweed survives because it combines several annoying traits into one weed:

• Deep roots

• Aggressive spreading

• Waxy leaves that resist herbicides

• Ability to regrow from fragments

• Perennial growth habit.

In thin or stressed lawns, it can quickly take over entire sections of turf.

It especially loves:

• Wet soils

• Compacted ground

• Overwatered lawns

• Thin turf with poor density

• Areas with drainage problems.

If your lawn already struggles with compaction or thinning, Virginia buttonweed often shows up like an uninvited guest who suddenly acts like they own the place.

 

Related: The Very Worst Lawn Weeds (And How to Get Rid of Them) 

 

The Best Time to Treat Virginia Buttonweed

The biggest mistake homeowners make is waiting until midsummer when the weed is mature, woody, and flowering heavily.

Young Virginia buttonweed is far easier to control. The ideal treatment window is:

• Late spring through early summer

• When plants are small and actively growing

• Before extensive flowering and seed production.

That doesn’t mean mature infestations can’t be controlled — it just usually takes repeated applications.

The Best Post-emergent Herbicide Options for Virginia Buttonweed

Not every weed killer works on Virginia buttonweed. In fact, many common “weed and feed” products barely slow it down. For serious buttonweed control, you need selective postemergence herbicides designed for tough broadleaf weeds.

Celsius + Certainty Herbicide Kit (Warm-Season Lawns)

The best Virginia buttonweed killer for warm-season lawns is the Celsius and Certainty Kit. This ultimate herbicide combination includes everything you need to effectively target a wide range of weeds without harming your lawn. The kit includes Celsius WG Herbicide, Certainty Herbicide, Hi-Yield Surfactant (to help the herbicides stick to waxy leaves), and blue marker dye (to help you see where you have sprayed). It’s a powerful mix that’s safe to use across a broad temperature range.

• Excellent Virginia buttonweed control

• Safe on warm-season grasses

• Targets mature infestations better than many box-store products

• Also controls a huge range of other difficult weeds.

Particularly effective for:

• Bermuda

• Zoysia

• Centipede

• St. Augustine (with proper application rates).

Note: Celsius is safe for all warm-season grasses other than Bahiagrass. Certainty is safe for all warm-season grasses.

 

celsius-and-certainty-herbicide-kit-with-surfactant-and-dye

 

Recognition + Fusilade II Kit (For Zoysiagrass, St. Augustinegrass, Kikuyugrass)

If your infestation is severe or mixed with grassy weeds, this combo can be extremely effective.

It’s particularly useful when:

• Virginia buttonweed is mixed with grassy invaders

• The lawn is heavily infested

• Previous herbicide attempts failed.

 

recognition-and-fusilade-herbicide-kit-remove-bermuda-in-zoysia-and-st-augustine-lawns

 

Tenacity (Cool-Season Lawns) 

Tenacity herbicide is an excellent broadleaf and grassy weed killer for cool-season turf. It can be used for pre- and postemergence control of more than 46 broadleaf weed and grass species. Tenacity controls difficult weeds like crabgrass and goosegrass and can suppress young Virginia buttonweed.

Tenacity represses photosynthesis in susceptible and receptive plants as it is absorbed systemically through roots, leaves, and shoots. It can be effectively used to control weed invasion and promote excellent control of tough-to-control weeds like dandelions before and during seeding of particular types of turfgrasses.

 

tenacity-herbicide 

 

Triad Select™ Broadleaf Herbicide

Triad Select™ Herbicide uses a blend of three weed killers to control a wide range of broadleaf weeds. This is a safe weed killer that contains the same active ingredients (Dicamba, 2,4D, and MCPA) as many store-bought products, but in higher concentrations. In fact, this product is like the ones the pros use every day.

 

broadleaf-weed-control-triad-select-3-way-herbicide

 

Turf Grasses Most Susceptible to Virginia Buttonweed 

St. Augustine Grass 

St. Augustine is probably the most commonly affected turfgrass.

Why?

• It prefers moist conditions (which buttonweed also loves)

• It can thin out quickly under stress

• It’s sensitive to many herbicides, making control trickier

• Open stolon gaps give buttonweed room to spread.

Lawns with poor drainage or overwatering are especially vulnerable.

Important Tips for St. Augustine

• Avoid spraying during extreme heat

• Never exceed label rates

• Use surfactant carefully

• Spot spray where possible

• Expect multiple treatments for mature infestations.

Virginia buttonweed rarely disappears after a single application. Persistence is key.

Centipede Grass

Centipede grass struggles because:

• It grows relatively slowly

• It doesn’t recover from damage quickly

• Low-fertility lawns can thin out easily

• Wet acidic soils encourage buttonweed invasion.

Once Virginia buttonweed establishes itself in Centipede, it can spread aggressively through weak areas.

Tall Fescue

Tall Fescue is particularly susceptible in:

• Transition zone climates

• Poorly drained soils

• Irrigated summer lawns.

Because Fescue grows in bunches rather than spreading aggressively like Bermuda, open spaces between plants allow buttonweed to creep in. Thin Fescue lawns are especially vulnerable because Virginia buttonweed spreads aggressively through open canopy areas.

Summer stress makes this even worse.

For Virginia buttonweed control in Fescue:

• Treat early while weeds are young

• Improve turf density through overseeding

• Avoid overwatering

• Use selective herbicides labeled for cool-season turf

• Expect repeat applications.

 

Related: Looks Like a Flower, Acts Like a Weed: What's Taking Over Your Lawn? 

 

How to Get Rid of Buttonweed Naturally (Or at Least Reduce It)

Complete natural control is difficult, but you can make your lawn less inviting.

Improve Drainage

Virginia buttonweed thrives in soggy soil.

If parts of your lawn stay wet after rain, consider:

• Aeration

• Soil amendments

• Reducing irrigation frequency

• Correcting drainage issues.

Thicken the Lawn

A dense lawn crowds out weeds naturally.

Focus on:

• Proper mowing height

• Balanced fertilization

• Correct watering

• Overseeding thin areas.

Avoid Pulling Mature Plants

Hand-pulling mature buttonweed often leaves rooted fragments behind.

Those fragments regrow quickly.

If pulling manually:

• Remove entire root systems

• Bag all debris

• Don’t leave stems on the lawn.

How Long Does Virginia Buttonweed Control Take?

Honestly? Longer than most people expect.

Severe infestations often require:

• 2–3 herbicide applications

• Several weeks between treatments

• Ongoing monitoring.

This weed is persistent, but consistent treatment does work.

The lawns that lose the battle are usually the ones where:

1. The wrong herbicide was used

2. Treatments stopped too early

3. Lawn health problems weren’t corrected.

Common Mistakes That Make Virginia Buttonweed Worse

Mowing Too Low

Scalping weakens turf and creates open areas for weeds to spread.

Overwatering

Virginia buttonweed absolutely loves wet conditions.

Using Non-Selective Herbicides Carelessly

Products like glyphosate might kill the weed, but they will take your lawn with it.

Waiting Too Long to Treat

Young weeds are dramatically easier to control than mature mats.

Ignoring Soil Compaction

Compacted soil weakens grass and encourages invasion.

Virginia Buttonweed vs Dollarweed: How to Tell the Difference 

Homeowners often confuse Virginia Buttonweed and Dollarweed because both weeds love wet lawns and spread aggressively through turf. But they’re actually very different plants — and identifying them correctly matters because control methods can vary.

Virginia Buttonweed

• Long, narrow, dark green leaves

• Small white star-shaped flowers

• Creeping stems that root at the nodes

• Forms dense mat-like patches

• Tough perennial weed with deep roots.

Virginia buttonweed tends to grow low and tangled through the lawn, almost like a vine woven into the turf.

Dollarweed

• Bright green, round leaves shaped like tiny lily pads or umbrellas

• Leaves attached in the center of the stem

• Upright growth habit

• Spreads through underground rhizomes

• Common in overly wet or poorly drained lawns.

Dollarweed usually stands taller and is much easier to spot from a distance because of its distinctive circular leaves.

The Quickest Way to Tell Them Apart

If the weed has:

• round “coin-shaped” leaves → it’s probably dollarweed

• elongated leaves with white flowers and creeping stems → it’s likely Virginia buttonweed.

And unfortunately, Virginia buttonweed is usually the tougher of the two to completely eliminate.

 

Related: Why Lawn Problems Come Back Year After Year 

 

FAQs About Virginia Buttonweed

Is Virginia buttonweed an annual or perennial?

Virginia Buttonweed is a perennial weed, which means it survives for multiple years rather than dying after a single season. Even if the visible top growth disappears during colder months, underground crowns, roots, and rooted stem nodes often survive and regrow when temperatures warm up in spring.

That’s one of the reasons Virginia buttonweed is much harder to control than simple annual weeds like crabgrass. If you only kill the top growth and leave the root system alive, it usually comes right back.

Will Virginia buttonweed die in winter?

Virginia buttonweed may brown out or appear dormant after frost, especially in cooler regions, but that doesn’t necessarily mean it’s dead.

In many lawns:

• Roots survive underground

• Stem nodes remain viable

• Crowns regrow in spring.

In warm-season regions, buttonweed may persist almost year-round, while in cooler climates it may only undergo temporary winter suppression.

This is why early spring monitoring matters. Small young plants are far easier to control than mature summer infestations.

Why does Virginia buttonweed keep coming back?

Virginia buttonweed is extremely persistent because it spreads in several ways at once:

• seeds

• creeping stems

• rooted nodes

• underground root structures.

Even tiny fragments left behind after mowing, edging, or hand-pulling can sometimes re-root into the soil.

It also tends to return when the underlying lawn conditions remain favorable, including:

• poor drainage

• compacted soil

• excessive irrigation

• thin turf

• low mowing heights.

In many cases, repeated infestations are less about failed herbicides and more about ongoing lawn stress.

Does Virginia buttonweed spread by seed or roots?

Both. Virginia buttonweed spreads through:

• seeds

• creeping stems

• rooted stem nodes

• underground perennial structures.

The stems are especially problematic because every node along the plant can potentially root into the soil and create another plant.

That means the weed can spread sideways very quickly across thin turf, especially during warm, wet weather.

Can you pull Virginia buttonweed by hand?

You can, but mature infestations are difficult to remove completely by hand.

The problem is that:

• Stems break easily

• Roots run deep

• Fragments can regrow

• Rooted nodes often remain behind.

Hand-pulling tends to work best on:

• Very young plants

• Isolated patches

• Moist soil conditions where roots release more easily.

For large infestations, selective postemergence herbicide options for Virginia buttonweed are usually far more effective.

Why is Virginia buttonweed worse in wet summers?

Virginia buttonweed absolutely loves moisture.

Wet summers encourage:

• Rapid rooting at stem nodes

• Faster creeping growth

• Seed germination

• Weaker turf competition.

Poor drainage and overwatering create ideal conditions for infestations to spread aggressively.

If parts of your lawn stay soggy for long periods after rain, Virginia buttonweed can move in surprisingly quickly.

This is especially common in:

• St. Augustine lawns

• Low spots

• Compacted clay soils

• Shaded damp areas.

Does mowing spread Virginia buttonweed?

It can. Because Virginia buttonweed grows low to the ground and roots along creeping stems, mowing can sometimes spread fragments into new areas of the lawn.

This is especially likely when:

• The lawn is wet

• Infestations are mature

• Mower blades are dull

• Cuttings are left behind.

Bagging cuttings during heavy infestations may help reduce spread while treatment is underway.

Is Virginia buttonweed toxic to pets?

Virginia buttonweed itself is not generally considered highly toxic to pets.

However:

• Pets should avoid treated lawns until herbicides have fully dried

• Some herbicide products may have label-specific restrictions

• Ingestion of large quantities of plant material may still cause mild stomach upset.

Always follow herbicide label instructions regarding pet safety and re-entry times.

How many treatments does Virginia buttonweed usually require?

Severe infestations often require multiple treatments rather than a single application.

Most homeowners should expect:

• 2–3 applications

• Several weeks between treatments

• Ongoing spot spraying for regrowth.

Young buttonweed is much easier to control than mature woody infestations, which is why early treatment is so important.

Can pre-emergent herbicides prevent Virginia buttonweed?

Pre-emergents may help reduce some seed germination, but they usually will not eliminate established Virginia buttonweed plants.

Because the weed spreads heavily through rooted stems and perennial growth structures, postemergence herbicide options for Virginia buttonweed are typically the primary control method once infestations are established.

Pre-emergents work best as part of a broader long-term prevention strategy.

Don’t Let Buttonweed Push Your Lawn Around

Virginia buttonweed is one of those weeds that humbles a lot of homeowners. It survives weak herbicides, spreads through mowing, and loves stressed lawns.

But once you combine:

• The right herbicide

• Proper timing

• Better lawn density

• Improved drainage

• Consistent follow-up treatments

…you can absolutely beat it without ruining your grass in the process.

Browse our professional-grade weed killers, pre-emergents, fertilizers, biostimulants, and lawn care products to build a stronger, healthier lawn that leaves less room for weeds to move in. And if you want real-world lawn advice without the fluff, check out our videos on the Golf Course Lawn YouTube channel.