Identifying Different Types of Grubs in Your Lawn and Their Lifecycles
Grubs are the larval stage of various beetles, and while the beetles may just be a pest, grubs can cause significant damage to your lawn if left unchecked. Understanding the different types of grubs, their lifecycles, and the impact they have on your lawn throughout the year is crucial for effective lawn care.
In this blog, we'll explore the most common grubs found in Georgia, how to identify them, and what to expect from each throughout the seasons.
Common Grubs Here in Georgia
Japanese Beetle Grubs
Lifecycle: Japanese beetles lay eggs in midsummer, and the grubs hatch in late summer. They feed on grass roots until late fall, then burrow deeper into the soil to overwinter. In spring, they resume feeding until they pupate and emerge as adult beetles in early summer.
Impact: The damage is most noticeable in late summer and early fall when the grubs are actively feeding on the roots, leading to brown patches and weakened turf.
June Beetle (May Beetle) Grubs
Lifecycle: June beetles have a one-year to three-year lifecycle, depending on the species. These grubs emerge from the soil in spring or early summer. They are active at night when they feed and mate.
Impact: The most significant damage occurs in the second year of the grub's lifecycle, with extensive root feeding leading to dead patches or spongy turf.
Masked Chafer Grubs
Lifecycle: Masked chafers have a one-year lifecycle, with adults emerging in early summer to lay eggs. They grow quickly and are full sized by August.
Impact: The damage is often heaviest in September and October, with large areas of the lawn turning brown and dying due to extensive root damage.
Managing Grub Infestations
To effectively manage grubs, it's necessary to identify them early and understand their lifecycle. Regular lawn inspections, particularly in late summer and early fall, can help you detect signs of grub activity before the damage becomes difficult to repair. Watch for irregular brown patches, spongy turf, and increased animal activity, as birds, skunks, and raccoons often dig up lawns to feed on grubs. While keeping an eye out for grubs, don't forget to be vigilant for other lawn pests, such as Armyworms, which can cause similar damage. Learn more about Battling Grubs and Armyworms Late in Season here.
Timing is critical when it comes to grub control. Preventive treatments are most effective when applied in the spring before grubs hatch, while curative treatments should be administered in late summer or early fall when grubs are actively feeding. Both chemical and organic options are available, so you can choose a method that aligns with your lawn care philosophy.
At AgroPro, our Grub Control Treatments are designed to protect your lawn for up to six months with each application. If you suspect a grub infestation (or any unwanted lawn pest), consider reaching out to professionals who can help ensure your lawn stays healthy and looking its best.
