If you find one or two grubs is normal and healthy, but if you find 5 or more grubs, you have a grub worm infestation that needs treatment to prevent further damage to your turfgrass. The Right Time for Grub Treatment Coincides with Periods Having the Most Damage. This time of year (late summer and fall), only curative products can be used to effectively control grub populations. As the season progresses around June, the pupate emerge from the soil as a Japanese beetle, and the egg-laying life cycle process starts all over again. Overseed the bare or thin spots. Used at the first sign of grubs, this product should be thoroughly watered in after application. Grub control insecticides that contain bifenthrin, imidacloprid, or … Water your lawn both before and after applying the pesticide to ensure that the chemical sinks in to the soil to where the grubs are. If you treat for grubs in the spring, you must realize that another treatment may be necessary in the fall. However, because grub … Imidacloprid. Spring Stage-In spring the grub is hungry and goes to the root zone of … Milky spore is a common grub treatment, but it will only affect Japanese beetle white grubs. Before the dead patches even appear, your lawn feels spongy when stepped on, as it it were 
freshly laid sod. Neonicotinoids are systemic and are absorbed by the grass, killing grubs not on contact but rather when they feed on the roots of plants that have been treated. White grubs are the larval stage of various beetles, including cinch bugs and June beetles. Since most grubs hatch in mid-July through mid-August, this is generally the right time to apply your curative products. To treat grubs it is important to first understand their lifecycle. There are several other preventative products in the neonicotinoid class of insecticides. In agriculture, they are important pests of forage, corn, sorghum and sugarcane. This is important if and when you decide to treat the lawn. As their larvae go through different stages of development, they eventually reach the stage where their damage is most visible. We have found a few grubs while pulling up weeds. Unfortunately, grubs and their notorious below-ground destruction may go unnoticed until late summer, when dead patches of grass suddenly appear in your lawn and begin to spread. April is a good time. When Should Grub Control Be Put Down?. Unfortunately, their presence often goes undetected at that time. Whether you are just starting out, maintaining or troubleshooting, you'll find advice and answers here for all your lawn care needs. To determine the extent of infestation or which areas require treatment, dig up small sections of lawn. Treating adult grubs are more difficult than the younger ones, so you need to get rid of them when they are in the larvae stage. The best treatment may kill only 60% of the grubs… There are also several preventative products that include both a neonicotinoid and a pyrethroid, which provides control not only for grubs but also caterpillars, billbugs, and some other lawn insect pests. You can treat for grubs in early fall as during that period the hatched grubs will be smaller in size,plus, they come closer to the soil’s surface, so killing them will be easy. Examples of grub control products with neonicotinoids are Merit®, Meridian® and Arena®. This is a very popular option being a natural and healthy pest control oil. This will provide the best preventative control of grubs for the next season. To confirm whether you need to treat for grubs, examine several soil sections at least 3 to 4 inches across and 4 inches deep (sample sandy soils to greater depths). April 12, 2009 By Tech Support Leave a Comment. © 2002-2020 The Scotts Company LLC. Mid-August is the most favorable period for undertaking a curative method as the grub worms are still small. A few signs will tell you that your lawn needs treatment. Treating white grubs in the yard. Don’t let these issues keep you from loving your lawn. The ideal treatment time for white grubs is around the time grubs hatch or in the first few weeks of development. Before we talk about the best preventative insecticides it’s important to point out the importance of timing. The products that are designed to be used for grubs in the lawn are not designed for use in gardens. This blog, accompanying a live video we produced in the field, addresses some of the common questions we get at the UNH Extension Infoline about grubs. Often times grub damaged grass will pull out very easily at the roots. After fertilizer and grass seed, grub control products are typically the most prominently displayed and commonly stocked lawn care product at garden centers. As you’re scouting for grubs in your lawn, take notes so you remember which areas of your lawn have high counts and which don’t. A re-application at this point will ensure that any missed eggs or grubs are eliminated. Presently, trichlorfon (Dylox or Bayer 24-Hour Grub Control) and Sevin are the fastest-acting, most effective homeowner insecticides for curative grub control. It is not an automatic decision to choose to use an insecticide for white grubs. This product is most effective when the grub is actively feeding so applying it 2 to 3 months in advance of severe grub feeding from June to August is recommended. Rather, techniques like crop rotation, tilling, and handpicking are better options. Generally, these chemicals are best applied from mid-June to early August. Applying a preventative grub control product in the spring or early summer will provide much better grub control than waiting until after the damage has occurred. White grubs are a common turf and lawn pest, and beneficial nematodes can be a very effective (and safe!) How to Treat Japanese Beetles & Grubs: Stage 1 Dormant Grub: October – March. There are several easy-to-spot signs that you may have grubs in your lawn: To check if you have a grub problem, peel back a square foot of green turf in each of several areas of your lawn. If you wait until August when … To successfully use nematodes for grub control, you should keep the following principles in mind: For home gardeners that do their homework and follow instructions carefully, nematodes can be a great natural option for controlling grubs. The lawn will withstand the amount of feeding these few grubs do. You should treat for grubs in late spring through early summer. It is safe for mammals and most fish so it has a small impact on the local ecosystem but does kill the grubs damaging the grass. Treatment for white grubs in late summer is problematic. Just because there are a lot of grubs, or not a lot of grubs, in a particular square foot doesn’t mean that the entire lawn either does or doesn’t have a grub infestation. A few grubs aren't a problem, but if you see lots of them when you turn the soil, take action. When to Control Grubs Controls are most effective on immature grubs. What we often hear from homeowners is that they believe they have grubs because animals like moles, skunks, crows and racoons are digging in the lawn. Grubs, also called grub worms are the larvae of beetles. Grubs in the soil come in contact with the spores through ingestion. control. For most species and locations that means July or August is the prime time to treat with an insecticide. Ingredients such as carbaryl, trichlorfon or zeta-cypermethrin are curative and work on contact with grubs. Sift around in the soil, simply counting how many grubs you find. If you are against chemical products, then this is the best choice for you. The lawn needs to be well watered and the soil can’t go dry while the nematodes are getting established. How can I save some for the monarch butterflies but keep it from spreading? The later in the season these products are applied, the farther down the chemical needs to travel in the soil to contact the grubs. This product is the latest innovation in the control of grubs in your lawn. White grubs … Grubs burrow deep into the soil and rest through the winter. Because grubs are the offspring of June bugs, Japanese beetles, or European Chafers, they often recur season after season. Come March, lawns already under attack by grubs are best treated in early spring or fall. If left uncontrolled, white grubs will continue to feed throughout the … The key to controlling grubs is to kill them before they hatch and begin to cause damage to your lawn. However, they only work if used in the lawn in June and July. Also be conscious of drift. Prevention. Nematodes are microscopic worms, and some species of nematodes can work very well for controlling grubs in home lawns. You may be able to get an early read on a grub problem in your lawn if you notice the presence of adult beetles and patches of dying grass. This isn’t a reliable clue, however, because grub infestations aren’t always accompanied by animal damage and animal damage doesn’t always result from a grub infestation. The nematodes need to be viable (living) when applied. How To Treat for Grubs [Prevent Before its Too Late] Posted by Dave Schwarm on Jun 25, 2020 4:02:18 PM Tweet; The Importance of Preventative Grub Control Grubs are the silent killers of lawn pests. If you have a very high concentration of grubs – 10 or more grubs per square foot – treatment may be necessary to maintain healthy grass. Treatment for white grubs … Timely treatment is crucial as otherwise even the most effective product won’t provide proper effect. Alway read the labels of the products you’re applying. Grub Treatment Options. Unfortunately attack by these grubs can happen to any lawn and can occur numerous times during a season. Repair any damage. If this has happened in your lawn, there is good news. However, Acelepryn is a non-toxic insect killer. These products should be watered in well, immediately after application. When this commercially available bacterium is used, it infects the grubs and produces a disease. You can … If you have a severe grub infestation and want to use a chemical product to control grubs, you have a number of widely available options. From about late April into early June, you can effectively use a … The best way to control grubs is to target them either as grub worms or when they’re adults and prevent them from laying eggs. The granules must be applied multiple times over two years using a spreader. Later stages can be more difficult to control and significant turf damage may have already occurred. 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