Tackle Dallisgrass Control: A Comprehensive Guide

Lawn Care & Landscape
Get rid of dallisgrass for good! Learn how to identify, prevent, and treat this pesky weed with our comprehensive guide on dallisgrass control.Get My Instant Price

It's essential to understand what dallisgrass is, how it spreads, and the best methods for preventing its growth or treating existing infestations. Learn more about this pesky weed in our comprehensive guide on dallisgrass control. This includes identifying the problem to finding solutions that will keep your yard looking great.

What is Dallisgrass?

Dallisgrass (Paspalum dilatatum) is an aggressive, warm-season perennial grass native to the southern United States. It has a wide leaf blade and grows in dense clumps up to three feet tall. The stems are hollow and have sharp points at their tips. Dallisgrass produces seedheads that contain several hundred seeds each. Therefore, making it highly invasive and difficult to control once established.

The best way to prevent dallisgrass from taking over your lawn or garden is by maintaining healthy soil conditions with regular fertilization, mowing regularly, and avoiding overwatering. Additionally, controlling weeds early on can help reduce the chances of dallisgrass spreading throughout your landscape. Regularly removing dead vegetation can also help keep the weed population down. In addition, promoting healthy growth of desirable plants in the area.

If you already have an infestation of dallisgrass on your property, there are several treatments available for removal depending on how severe it is. For smaller areas with light infestations of dallisgrass, spot spraying with herbicides may be effective at killing existing weeds without harming nearby plants or turf grasses. If the infestation is more widespread than spot treatment may not be enough. In this case, a systemic herbicide such as glyphosate may need to be applied across larger areas for complete eradication of existing weeds. Furthermore, preventing new ones from sprouting up again later on down the road.

For those who prefer organic solutions rather than chemical treatments for managing their landscape pests, there are some natural alternatives available too. Mulching heavily around affected areas can help smother out existing weeds while discouraging new ones from growing back. This is due to lack of sunlight penetration into soil below the mulch layer. In addition, this will improve overall healthiness of soil structure over time. Therefore, resulting in healthier plant life overall when combined with other cultural practices. For instance, proper fertilization scheduling etcetera. Finally, hand weeding individual patches every few weeks during peak growing season (spring/summer) can also work wonders at keeping weed populations under control. However, it requires diligent effort since any missed spots could quickly lead back towards an all-out invasion again if left unchecked.

Dallisgrass is a warm-season grass that can quickly spread and become invasive if not managed properly. Knowing how it spreads is the key to effective dallisgrass control, so let's take a closer look at this process.

How Does Dallisgrass Spread?

Wind is the most common way for dallisgrass to spread. Its small seeds can easily be carried away on the breeze and deposited in new locations where they will germinate if conditions are favorable. Therefore, even if you have managed to keep your lawn free of dallisgrass, it could still find its way onto your property from neighboring yards or nearby fields or parks.

Water is another major factor in the spread of dallisgrass as it can be transported by floodwaters or irrigation runoff into new areas where it may not have been present before. Animals such as birds, rodents, deer and other wildlife may also play a role in spreading this weed since they often carry seeds on their fur or feet when moving between different habitats. Lastly, humans can unknowingly contribute to the spread of dallisgrass. This is done when mowing grass clippings contain viable seed heads into adjacent areas or dumping soil contaminated with rhizomes from one location into another area without realizing what’s inside them.

Dallisgrass can spread quickly and easily. Therefore, making it important to understand the methods of prevention. To ensure that your home is free from this invasive weed, preventive measures must be taken to stop its growth before it takes over.

Preventing Dallisgrass Growth

Maintaining a healthy lawn is the best way to prevent dallisgrass growth. Proper mowing and fertilization practices are key in preventing this weed from taking over your yard. Mow at the recommended height for your grass type. As a result, thiis will help shade out any potential dallisgrass seedlings. Fertilize with a balanced fertilizer according to soil test results and seasonally as needed, This will help keep your turf strong and competitive against weeds like dallisgrass.

Removing existing plants before they can produce seed is another important step in preventing the spread of this weed. Hand-pulling or digging up small infestations can be effective if done regularly throughout the growing season. However, larger infestations may require chemical control using herbicides such as glyphosate or triclopyr. It’s important to read and follow all label instructions when applying these products to ensure proper application rates and timing for optimal results.

Pre-emergent herbicides that provide preventive control of many annual weeds including dallisgrass are also available. By forming an invisible barrier in the soil that prevents germination of weed seeds before they have a chance to grow into mature plants. Pre-emergents should be applied prior to expected germination times for maximum effectiveness. Therefore, it’s important to know when those times occur in your area (usually spring). Additionally, pre-emergents should not be used on established turf since they will also prevent desired grasses from emerging as well.

Finally, cultural practices such as core aeration can help reduce compaction and improve drainage. As a result, this helps create an environment less conducive for dallisgrass growth while encouraging healthy turf growth instead. Core aeration removes plugs of soil from the ground surface allowing water, air, nutrients and other beneficial organisms easier access into root zones. There they can work their magic on keeping your lawn lush without pesky weeds like dallisgrass getting in the way.

By taking preventative measures, such as proper lawn maintenance and using pre-emergent herbicides, homeowners can help protect their property from dallisgrass infestations. For those who already have an existing problem with this pesky weed, the next heading will provide information on how to treat it effectively.

Treating Existing Dallisgrass Infestations

Treating existing dallisgrass infestations requires the use of herbicides containing active ingredients such as glyphosate or triclopyr. These products should be applied according to label instructions for best results. Identifying the type of dallisgrass is essential prior to beginning any treatment. Additionally, various varieties may respond differently to different herbicides. Some varieties of dallisgrass may be more tolerant to particular herbicides than others. Also, applying too much or too little product can reduce effectiveness and potentially harm other plants in the area.

Homeowners must take heed of all safety measures stated on the product's label when handling a herbicide with an active ingredient such as glyphosate or triclopyr. This entails donning protective clothing. For example, long pants and sleeves, goggles and gloves; keeping away from skin contact; not inhaling vapors. Furthermore, prohibiting children from entering treated areas until dryness sets in. Finally, scouring hands after use; discarding empty containers correctly and stowing unused products out of reach from kids and pets.

At the optimal time for maximum efficacy against dallisgrass infestations, late summer/early fall applications should be utilized. During this season, increased weed growth facilitates greater absorption of chemicals into their root systems as opposed to spring when temperatures are cooler and vegetation has slowed down. Therefore, substantially hindering chemical uptake by roots.

What is the best herbicide to kill dallisgrass?

The best herbicide to kill dallisgrass is a post-emergent product containing the active ingredient quinclorac. This selective, systemic herbicide can be applied over large areas and will effectively control dallisgrass without harming other desirable plants. For optimal results, apply it when temperatures are between 60-90 degrees Fahrenheit and avoid mowing for at least two weeks before or after application. Be sure to read and follow all label instructions carefully for safe use of this powerful herbicide.

How do you kill dallisgrass without killing Bermuda grass?

The best way to kill dallisgrass without harming Bermuda grass is to use a selective herbicide that targets broadleaf weeds such as dallisgrass. This can be applied with either a liquid or granular application and should be done when the temperature is above 60 degrees Fahrenheit. To ensure proper coverage, apply it in two separate applications four weeks apart. For maximum effectiveness, water thoroughly after each application and mow regularly at the recommended height for your lawn type.


By understanding how it spreads, taking preventive measures to stop its growth, and using the right treatments for existing infestations, you can keep dallisgrass from ruining your outdoor space. With proper management techniques in place, homeowners can enjoy a lush green yard free of pesky weeds.

Take control of your dallisgrass problem with OneNeighbor and get superior quality services at the most affordable rates. Join a group of homeowners in your neighborhood to drive significant cost savings and consolidate payments today!

Book affordable lawn mowing service in 60 seconds.

A perfect lawn
Get the lowest price, instantly.  No quotes and no contracts. Save money on lawn mowing and all other outdoor home services with neighborhood group purchasing.
GET MY INSTANT PRICELawn Mowing Service Near Me
OneNeighbor Logo
OneNeighbor allows homeowners to find, purchase, and manage home services as a group to drive significant cost savings and consolidate payments. OneNeighbor puts homeowners and neighborhoods at ease knowing they're receiving superior quality services at the most affordable rates.
OneNeighbor InstagramOneNeighbor FacebookOneNeighbor TwitterOneNeighbor Youtube

© 2023 OneNeighbor, Inc.  All rights reserved.
Terms of Service