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How to Kill Dallisgrass: a Pro’s Guide to Effective Control! (2023)

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Do you have a problem with dallisgrass invading your lawn? You’re not alone. Dallisgrass is an annoying weed that spreads quickly and can be difficult to eradicate. But don’t despair!

With the right knowledge, tools, and techniques, it’s possible to get rid of this pesky problem for good.

This article will provide some tips on how to kill dallisgrass so you can reclaim your turf once again!

It’s possible to kill dallisgrass with the right knowledge, tools, and techniques. Here are some tips:

  • Keep your lawn mowed regularly; mowing helps prevent weeds from taking root.
  • Apply pre-emergent herbicides to your lawn; this will help prevent dallisgrass from germinating.
  • Apply post-emergent herbicides to actively growing dallisgrass; this will help to kill existing plants.
  • Dig out existing dallisgrass plants; this will help to ensure that any remaining roots are removed.
  • Keep the area around your lawn free of dallisgrass; this will help to prevent the spread of the weed.

By following these tips, you can get rid of dallisgrass and reclaim your turf once again. Good luck!

Pests in Gardens and Landscapes

how to kill dallisgrass
Don’t let dallisgrass ruin your perfect garden or landscape; take action to protect it now! Organic solutions such as biological control, re-seeding and composting can be effective in controlling the spread. Natural predators like ground beetles also help by eating the weed’s seeds before they germinate.

Preemergence herbicides can be applied prior to germination while post-emergent herbicides are used for mature plants that have already sprouted up from seedlings. Cultural practices such as application of a large amount of water around existing plants will help weaken them enough for removal with tools or hand pulling, but this must be done regularly over time to achieve success.

To completely rid an area of dallisgrass, an integrated approach needs to combine these methods along with mechanical control where necessary. Transitioning into this next step ensures complete eradication and protection from future infestation, so you can enjoy your pristine lawn all year round!

Dallisgrass Weed

Dallisgrass Weed
Dallisgrass is a troublesome weed that’s naturalized across much of the southern US. It’s identifiable by gray-green leaf blades and clumping growth habit, which can create unsightly tufts in turf lawns.

If you want to get rid of it for good, understanding how to identify it and using an integrated approach, involving both cultural practices and herbicides, will be key to your success!

Characteristics and Impact

Dallisgrass is native to South America but has naturalized throughout much of the southern US, except at high elevations. It grows in clumps and spreads via shallow rhizomes beneath the surface, as well as producing abundant seed heads, allowing it to thrive in sandy or clay soils even during drought conditions.

This troublesome weed affects turfgrass areas like golf courses, sports playing fields, recreational parks and home landscapes by creating unsightly mounds on top of otherwise flat grass surfaces.

Take control of your lawn and protect it from the damaging effects of dallisgrass by employing several methods:

  • Proper lawn maintenance practices, such as watering deeply but infrequently
  • Filling bare spots quickly with new sod
  • Using pre-emergent herbicides toxic to crabgrass
  • Digging out offending plants manually
  • Applying post-emergent herbicides for crabgrass removal
  • Spot treatments with non-selective herbicides like glyphosate
  • Selecting an appropriate UC ANR Publication on dallisgras suppression specifically designed for your region’s climate zone

With diligence and a little knowledge about how to kill dallisweed, along with prevention techniques, this pernicious pest can be eradicated from your lawn once and for all!


Identifying dallisgrass is the first step in taking control of your lawn and eliminating this pesky weed for good! Look for its unique gray-green leaf blades which have a wider appearance than most turfgrasses. It produces flower stalks with big black seeds on them that help make it easier to spot.

Cultural controls like soil sterilization or solarization are useful ways to prevent germination before they become established plants. Mechanical weeding can take care of existing populations without harming the environment or surrounding vegetation too much, depending on how well you know what you’re doing! Natural predators such as birds may also be able to provide some relief from these weeds if their population isn’t too large yet, though this method takes more time than others due to the need for near constant vigilance over your garden area.

With all these options available, controlling dallisgrass doesn’t have to feel overwhelming. Just pick one (or more!) according to your needs and start working towards achieving an even healthier lawn now!

How to Kill Dallisgrass

How to Kill Dallisgrass
Killing dallisgrass doesn’t have to be daunting. With healthy lawn management and pre- and post-emergent treatments, you can get rid of this pesky weed quickly. Recognize it by its wide blades that form clumps with shallow underground stems. Follow these steps to make sure your grass is dallisgrass-free:

  • Healthy lawn management
  • Use pre-emergents
  • Use post-emergent treatments
  • Recognize wide blades and clumps with shallow underground stems

Healthy Lawn Management

To keep dallisgrass from taking over your lawn, invest in healthy lawn management. Composting and aeration are key components. Strategic irrigation helps maintain the right balance of moisture for your turf grasses. Natural weedkillers like vinegar or lemon juice can be applied directly to areas infested. Fungicidal sprays should also be considered when attempting control on a larger scale. Cultural controls such as overseeding with species like Lestrange M create a thick canopy, preventing new weeds from emerging. Preemergent herbicides provide an extra layer of defense against germinating seedlings. Non-selective herbicides must only be used sparingly – they can quickly kill desirable plants too! With effort up front and ongoing maintenance, it’s possible to achieve successful long-term control over dallisgrass without resorting to drastic measures.

Using Pre-emergents

To take your dallisgrass control to the next level, use pre-emergent herbicides. Identify the active ingredients that will be most effective against dallisgrass seeds and over watering effects. Incorporate soil amendments and protective gear as part of an overall strategy. Post-emergent attacks like spot sprays and broadcasting applications work well. Create an integrated approach with cultural practices and chemical applications. Ensure long term solutions for successful dallisgrass control.

Pre-emergent herbicides offer effective prevention of germinating seedlings. Spot sprays and broadcasting applications offer great potential when used properly. Combine cultural practices like water management and fertilization with chemical applications like pre-and post emergent treatments. Moving forward, this can help you achieve success.

Post-emergent Treatment

Take control of dallisgrass with post-emergent treatments, employing spot sprays and broadcasting applications to create an integrated approach that will keep your lawn looking lush and weed free!

Post-emergent treatment is the use of specialized herbicides applied directly to actively growing plants. Spot treatments are ideal for small areas but may require several applications depending on the roots of the grass.

For larger infestations, broadcast application using a hose end sprayer or backpack sprayer is recommended. Organic options such as natural alternatives are available but may not have lasting effects as chemical herbicides do; it’s important to wear protective gear when applying any type of weed control product in order to avoid potential skin irritation or other adverse reactions.

With careful consideration and smart usage, post-emergent treatment can be successful in controlling dallisgrass while avoiding unnecessary harm caused by organic herbicides or even synthetic pesticides if used too liberally.

Transitioning into using pre-emergeents can help prevent future outbreaks from taking hold before they start!

Dallisgrass Id Features

Identifying dallisgrass can be tricky, but you can look out for its coarse-textured gray-green leaf blades and shallow, short underground stems to help differentiate it from other grasses. It belongs to the Poaceae family and has tall fescue characteristics. Its flowers appear during late spring/early summer months.

Organic control is possible with proper soil condition management and weather effects may also aid in controlling dallisgrass growth. Weed control must be done regularly through manual removal or chemical applications like preemergents if complete lawn care is desired; however, glyphosate spot treatments may provide faster results when dealing with established plants.

An integrated approach is needed to eradicate this troublesome plant from your property. This includes cultural practices along with herbicide use, ending with a transition into using preemergents without saying ‘step’.

Eat It or Treat It

Eat It or Treat It
When it comes to killing dallisgrass, prevention is key. Take action before the weeds take over by manually plucking young plants and mulching the soil afterward.

Make sure your lawn is properly watered and fertilized, and mow regularly to keep dallisgrass at bay.

If all else fails, choose a herbicide specifically designed for killing dallisgrass – don’t pick mature plants as they may have already spread their seeds!


To stay one step ahead of dallisgrass, take the necessary precautions. Natural predators such as ducks or chickens, soil sterilization with heat or chemicals, choosing a grass variety more resistant to the weed’s growth habits and incorporating landscaping ideas into your yard are all good methods of control. Cutting off existing seedheads can also reduce spread.

Combine all these strategies to protect against future infestations. You’ll have complete control of your lawn and prevent new seedheads from forming.

Manual Control

Manually removing dallisgrass is like playing a game of whack-a-mole; it can be time consuming and may seem never ending, but with persistence you will eventually win! Hand pulling young plants before they form rhizomes or set seed is one method of manual control. For more mature dallisgrass, boiling water or table salt diluted in water can also work. Alternatively, an auger screw is sometimes used to remove the plant from the soil without disturbing healthy turf grasses nearby.

Composting benefits are numerous; weed proofing techniques such as mulching help prevent new weeds from taking root. Natural weed killers offer an organic approach to controlling pests. Soil testing helps determine what nutrients your lawn needs for optimal growth. Sustainable gardening practices keep our environment healthy for future generations – all strategies that reduce the need for herbicides when dealing with pesky dallisgrass infestations!

Chemical Control

Take control of your dallisgrass issue with the help of chemical herbicides! Herbicides can be used to target dallisgrass in many different ways. Non-selective herbicide products are great for spot spraying, while preemergent and postemergent herbicide sprays should be considered for larger infestations.

Additionally, cultural controls such as using nitrogen fertilizer or planting weed-resistant grasses may aid in controlling a pernicious weed like Dallisgrass.

Here are some actionable tips on how to take advantage of chemical control:

  • Apply pre-emergence or post emergence herbicides when necessary and water them into the soil;
  • Use non selective herbicidal sprays on small patches;
  • Take care not to introduce new Dallisgrass weeds seeds through sod or seed when establishing turf lawns;
  • Consider applying glyphosate if other methods have failed.

With these strategies combined with diligence and knowledge about how best to apply them, you can effectively manage this troublesome weed from your lawn!

From here we move onto manual control – without needing any additional steps – where you’ll learn more about removing existing plants by hand rather than relying solely on chemicals.

Avoid Picking Mature Dallisgrass

Don’t be tempted to pick mature Dallisgrass. It can actually spread the weed further if done incorrectly.

It’s best to concentrate on preventive measures like proper lawn maintenance, soil temperatures, and using natural enemies of dallisgrass. Weeding techniques are also important. Remove young plants before they form rhizomes or set seed for better control.

Herbicide application should begin in late winter. That’s when abundant amounts of dallisgrass seed may have been produced, and it’ll give a greater chance of success.

Keep your lawn healthy with mowing, watering, fertilizing and manual weeding. That’s much better control than picking off individual stalks when they appear.

Mulching the Soil After Plucking Dallisgrass

After plucking the dallisgrass, give your soil a fresh layer of mulch to help keep it from coming back. Mulching helps add organic matter and nutrients to the soil, as well as preventing sprouts of dallisgrass from taking hold. It’ll improve aeration and regulate pH levels in your lawns.

Composting or adding a weed barrier work well in wet areas like home landscapes, to prevent germination of dallisgrass seed. But if chemical solutions aren’t preferred, natural remedies such as hand weeding or manually removing plants can be used. Mulching is still key though!

A thick layer of mulch on topsoil will make sure any remaining roots or seeds don’t get enough sunlight for growth. This’ll help avoid a re-infestation, with time and effort put into manual control methods too.

Watering and Lawn Fertilization

Watering and fertilizing your lawn regularly is key to keeping dallisgrass at bay – it’s like pouring water on a flame.

Organic control methods such as compost tea, soil amendments, and weed barriers can be employed in natural solutions for wet ground or areas where dallisgrass already exists.

For those who prefer manual control options, a foot pedal puller is essential for extracting the grass’ primary root deep enough to disrupt germination of the dallisgrass seed’s.

Applying an effective post-emergent herbicide with systemic properties will ensure successful elimination of any remaining plants so that you can enjoy your newly restored yard without worry about re-infestation.

As an added layer of protection against future invasions, make sure to treat the area with an appropriate pre-emergent herbicide before moving onto ‘Manual Control’.

Regular Lawn Mowing

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Regularly mowing your lawn helps keep dallisgrass in check, so don’t forget to give it a trim every now and then! Mowing can be an effective natural control technique as long as you have the right irrigation techniques and cultural practices.

To get rid of any existing dallisgrass, opt for biological interventions or organic solutions. Here are some tips on how to use mowing effectively against this weed:

  • Cut your turfgrass at least once a week during its growing season using sharp blades set at the correct height for that particular grass species.
  • Remove clippings from treated areas after each cut since they may contain viable seeds capable of spreading further infestation if left untreated around the yard.
  • Overlap onto previously-mowed sections by about 10% when cutting larger areas with irregular shapes – this will help ensure all parts receive adequate coverage from herbicide treatments later on if necessary.
  • Use mulching mowers which finely chop up clippings into small pieces before returning them back into soil instead of simply collecting them in bags; these nutrients add valuable nutrition back into lawns while also suppressing weeds such as dallisgrass naturally over time without chemical intervention needed!

With diligence and some knowledge about using manual methods effectively, you can make sure that pesky weed stays away permanently – just remember to transition seamlessly when moving onto ‘Manual Control’.

Choosing the Right Dallisgrass Herbicide

If you’re looking to get rid of dallisgrass, choosing the right herbicide is key! Organic methods such as weed suppression and manual control are good options, but may not be enough on their own. When selecting an herbicide, consider its application method and timing strategies that will provide effective dallisgrass treatment.

According to Pest Notes publication from University of California Agriculture & Natural Resources (UCANR), preemergence herbicides can be used in established turf-grasses and other sites to control germinating dallisgrass seed. Post-emergent ones target existing plants that have already germinated.

Glyphosate is a nonselective post emergence option which works well for spot treatments but doesn’t offer long term protection against reinfestation due to its low residual activity. It should always be combined with cultural practices like fertilization or mowing when possible. This strategy has proven most successful in controlling Dallisgrass weeds since they produce abundant seeds quickly, making them hardy invaders even after being treated with glyphosate alone.

The best strategy involves combining all available approaches, including cultural practices, proper use of selected chemicals and mechanical removal where appropriate. This offers the greatest hope for successful management over time.

Frequently Asked Questions (FAQs)

What is the best time of year to apply pre- and post-emergent herbicides to control dallisgrass?

When it comes to controlling dallisgrass, the best time of year to apply pre- and post-emergent herbicides is typically in early February during the winter season. Studies have found that applying herbicide products such as glyphosate or paspalum dilatatum are most effective when applied at this time due to decreased weed pressure from other weeds.

In addition, utilizing cultural control techniques like mulching strategies or biological controls can help reduce its spread further. Furthermore, spot treatments with nonselective herbicides can be used effectively on wet roadside areas where dallisgrass has become established and fungicide usage may become necessary for severe infestations.

With diligence and a little knowledge about how to kill dallisgrass and prevent its return, this pernicious weed can be eradicated from your lawn!

Is there any way to prevent dallisgrass from spreading?

You can prevent the spread of dallisgrass by utilizing natural predators, adjusting soil acidity, using herbicide alternatives, and creating weed barriers. Consider introducing drought tolerant turf grasses like buffalo grass to reduce competition. Mulch around your plants to smother any seeds brought in with new sod or seed mixtures. Taking steps now will ensure a beautiful lawn free of dallisgrass in no time!

Use natural predators, adjust soil acidity, use herbicide alternatives, and create weed barriers.
Introduce drought tolerant turf grasses like buffalo grass to reduce competition.
Mulch around plants to smother any seeds brought in with new sod or seed mixtures.
Take steps now for a beautiful lawn free of dallisgrass.

How long does it take for post-emergent herbicides to be effective?

It typically takes several applications of post-emergent herbicides at two to three week intervals for effective dallisgrass control. To maximize the effectiveness, cover crop and soil test prior to application to balance out the nutrients in your soil.

Natural weedkillers such as vinegar or soap solutions can be used on young dallisgrass seedlings before they produce their characteristic racemes. For more established plants, mechanical removal may be necessary, along with a strong herbicide product.

What is the optimal temperature for dallisgrass growth?

You may not have known it, but the optimal temperature for dallisgrass growth can be a key factor in managing your lawn. This perennial grass thrives in warmer temperatures and is native to South America. To ensure successful germination of its seeds, you must maintain soil fertility and regulate the temperature accordingly. Weed control products like herbicides are also an effective way to manage this weed as long as they’re used correctly according to manufacturer’s instructions. But cultural practices such as proper fertilization and mowing height should always be considered first when attempting dallisgrass control.

Are there any natural methods of controlling dallisgrass?

Maintaining a healthy lawn is the first and best way to naturally control dallisgrass. Prepare your soil with good ditch drainage, plant Bahia grass species as an alternative turfgrass, and apply thick layers of mulch to prevent weed growth. Early detection can help you take more organic solutions before resorting to herbicides for severe cases.

Diligent lawn maintenance, together with proper soil preparation such as aeration and fertilization every spring or fall season, will help you eliminate this troublesome weed from damaging your landscape and recreational areas.


Your lawn is your pride and joy. It can be heartbreaking to see it taken over by pesky dallisgrass. But with patience and the right approach, you can reclaim your turf and enjoy a healthy, weed-free lawn. Symbolically, think of it as a garden of your own making and take the time to nurture it.

Combine cultural practices, pre-emergent herbicides, and post-emergent treatments to keep your garden blooming with the beauty of a lush, green lawn. Keep a vigilant eye out for dallisgrass and, if you spot it, take the necessary steps to eradicate it.

With patience and an experienced approach, you can enjoy a healthy, weed-free lawn for years to come.

Avatar for Mutasim Sweileh

Mutasim Sweileh

Mutasim is a published author and software engineer and agriculture expert from the US. To date, he has helped thousands of people make their yards lush and thick.