Leaf Cutter Ants in Texas: How to Manage and Prevent Infestations

Leaf Cutter Ants

Leaf-cutter ants, known by various names such as town ants, cut ants, parasol ants, night ants, and fungus ants, are notorious for wreaking havoc on plants, gardens, and even entire crops in Texas. These ants have a unique way of life: they collect leaf fragments, cultivate fungus gardens in their underground nests, and feed on both the fungus and the leaves. Unfortunately, they are not easily deterred by traditional ant baits. However, with careful planning, it is possible to eliminate them and safeguard your plants. Discover effective strategies to combat and prevent Texas leaf-cutter ant infestations below.

Texas Leaf-Cutter Ant Basics

Texas leaf-cutter ants stand out from other ant species in several ways, not just in their diet. Here are some key characteristics to remember:

  • Rust-brown or dark-brown coloration
  • Worker ants range in size from approximately 1/16 to 1/2-inch
  • Queen ants are about 3/4 of an inch long
  • Leaf-cutting worker ants have three pairs of prominent spines on their thorax and one pair on their heads.

There is also another lesser-known species of leaf-cutter ant, Acromyrmex versicolor, which primarily inhabits the western, dry parts of Texas. This species can be identified by its over three pairs of short spines on the thorax and a bumpy upper surface on its abdomen.


The Texas leaf-cutter ant colony is governed by the queen, who resides in a network of underground chambers. A single colony can have four or five fertile queens continuously laying eggs. These eggs develop into larvae, most of which become sterile female worker ants. Reproductive ants, larger in size than worker ants, possess brownish-black wings, with females having larger heads.

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Reproductive Behavior

Mating flights of Texas leaf-cutter ants typically occur on clear, moonless nights between April and June, with swarms being more frequent in well-watered areas during the spring. In drier regions, swarms are generally observed after heavy rain. Infestations of leaf-cutter ants can be most intense during the spring and early summer, but vigilance is necessary throughout the year.

Effective Methods to Combat Texas Leaf-Cutter Ants

While it may seem challenging to eliminate Texas leaf-cutter ants, with proper research and planning, it is indeed possible. There are several enemies of the leaf-cutter ant that can be employed:

Natural Predators

Armadillos, spiders, wasps, birds, and other ant species, such as army ants, naturally prey on Texas leaf-cutter ants. While introducing natural predators can provide an effective solution, it may not be practical or desirable for most people.

Chemical Pesticides

Several chemical pesticides can effectively manage Texas leaf-cutter ants, including dust or granular insecticides (acephate, carbaryl, permethrin, etc.), hydramethylnon (specifically formulated for leaf-cutting ants), and fipronil insecticide-based injection treatment (reserved for professional forestry applications). However, these chemical solutions have varying levels of effectiveness, with dust and granular products only protecting plants and requiring frequent re-application. Hydramethylnon reduces colony activity temporarily, while fipronil treatments are impractical for general use.

DIY Remedies

For smaller infestations, some DIY remedies can be effective against Texas leaf-cutter ants:

  • Hot water treatment: Pouring boiling water directly on their nests can kill a significant number of ants, preventing their return.
  • Borax: Sprinkling borax on and around plants can poison the ants, as they carry it back to their colonies.
  • Diatomaceous earth: This natural substance scratches and dries out the ants, ultimately killing them.
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However, for larger infestations, a combination of DIY remedies and more potent, longer-lasting solutions may be necessary.

All-Natural Methods

All-natural remedies provide effective alternatives to toxic chemicals that may pose risks to pets and children. Here are some recommended all-natural methods:

  • Herbs and Essential Oils: Thyme, cloves, cinnamon, rosemary, and wintergreen essential oil can deter leaf-cutter ants.
  • Bacillus thuringiensis (Bt): A naturally occurring bacteria in some soils that produces toxic proteins fatal to insects.
  • Beneficial Nematodes: Tiny organisms that parasitize insects with larvae and pupae in the soil.
  • Fungal Pathogens: Certain fungi, such as Escovopsis sp., can eliminate leaf-cutter ants by overpowering and destroying the ant colony.
  • Predatory Mites: Primarily used to combat mites on plants, predatory mites can also eat leaf-cutter ants and their associated fungi.

All-natural options are an excellent choice for those concerned about the toxins in conventional insecticides or potential harm to pets and children.

Preventing Texas Leaf-Cutter Ants

Keeping your home clean and cutting off food sources can help prevent other ant species, but it is less effective against Texas leaf-cutter ants. The best approach is early detection and proactive management. Look out for the following signs:

Foraging Trails

Leaf-cutter ants leave trails of leaf tissue as they transport it back to their nests, often carrying leaf pieces on their backs.

Plant Damage

Significant leaf damage may occur overnight, with leaves of various plants and trees showing signs of defoliation.


Regularly survey your property for leaf-cutter ant nests. They are marked by loose soil craters and multiple entrances, often found in sandy or loamy soil. When a nest is detected, drench it with your preferred insecticide or seek professional assistance to prevent the infestation from worsening.

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Bonus Tip: Regular Maintenance Treatments

Act promptly upon noticing signs of Texas leaf-cutter ants on your property. Locate and treat nests with pesticides as quickly as possible. Besides reactive measures, proactive monthly treatments with all-natural pesticides can detect and address potential infestations early, ultimately saving time and money. Preventive treatments provide peace of mind, protecting your property from leaf-cutter ants and other pests.

Eliminate Texas leaf-cutter ants today! If you’re experiencing leaf-cutter ant issues, promptly address and treat their nests. Consider seeking assistance from a professional pest control company to ensure thorough elimination. Ames Farm Center offers effective services for dealing with leaf-cutter ants among other pest issues. Reach out today to book an inspection and safeguard your property.