Recommended insecticides include trichlorfon. We know the best time to apply whichever material is the latest or greatest product to prevent grubs. Using a shovel or a lawn edger, you can make a cut in a one-foot section of your lawn where you suspect grub activity. There are several other preventative products in the neonicotinoid class of insecticides. Later stages can be more difficult to control and significant turf damage may have already occurred. Because grubs are the offspring of June bugs, Japanese beetles, or European Chafers, they often recur season after season. The key to controlling grubs is to kill them before they hatch and begin to cause damage to your lawn. This material is applied so that it can get watered in and remain in the soil until grubs … If your white grub issue is May/June beetles, it is most effective to treat them early during their second summer. Grub Treatment – Grubs, Moles and Lawn fixes (15 Solutions) 1. However, they only work if used in the lawn in June and July. You may know, Is It Too Late to Treat for Grubs, if you have learned when the right period to treat grubs. This time of year (late summer and fall), only curative products can be used to effectively control grub populations. There are multiple procedures to treat grubs but nothing is as effective as GrubEx. It is also known as grub worms, annual white grubs or just plain old grubs. 2. Grubs also feed on the roots of weeds, vegetable transplants and ornamental plants. Many lawn issues that resemble grub damage can be caused by something else, including disease, drought stress, hairy chinch bugs, sod webworms, shade, compaction, and more. Grub control insecticides that contain bifenthrin, imidacloprid, or … As their larvae go through different stages of development, they eventually reach the stage where their damage is most visible. As expected, preventative measures are more effective than curative measures. Apply grub control pesticide. The Ask UNH Extension Infoline offers practical help finding answers for your home, yard, and garden questions. 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. 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. 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. How to Get Rid of Grubs in Lawn. The best and most effective insecticides are systemic and provide optimal control if applied to the lawn while the beetles are flying. We use a granular treatment that only requires one treatment … A re-application at this point will ensure that any missed eggs or grubs are eliminated. Some move as much as 12 inches below the surface. However, because grub … How can I save some for the monarch butterflies but keep it from spreading? There are several types of insecticides labeled for the treatment of grubs. Unfortunately attack by these grubs can happen to any lawn and can occur numerous times during a season. Grubs, or grub worms, are a common pest problem that affects lawns. Overseed the bare or thin spots. Grubs, which are the larval, or immature, stage of several species of beetles and chafers, can damage a lawn by feeding on the roots of your grass. One application of Scotts® GrubEx®1 can kill and prevent grubs for up to 4 months. When this commercially available bacterium is used, it infects the grubs and produces a disease. Nematodes are microscopic worms, and some species of nematodes can work very well for controlling grubs in home lawns. The likely explanation is the grass is being destroyed by hungry, thriving grub worms living below the surface of the lawn. Used at the first sign of grubs, this product should be thoroughly watered in after application. Severe damage to turf may have already occurred by September. Curative Pesticide Treatments – As previously mentioned, this the plan of attack to rid your lawn of it’s current grub infestation, and fast. It is recommended for use in the spring or early summer … This happens 
because grubs eat the roots holding the turf firmly in place on the soil. In most cases, whether it’s early spring or fall, it’s preferable to simply wait until the next appropriate window for using a preventative product that gets better results and is more targeted. Grubs thrive in moist conditions, so don’t overwater your lawn while treating your infestation. If you confirmed grub damage the previous fall or spring, meaning you found lots of grubs, then you may want to use a preventive insecticide for one or two years to build a more dense turf that will be tolerant of grubs. The product’s effects lasts for up to four months. Alway read the labels of the products you’re applying. 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 user is responsible for applying pesticides only as directed on the label and in compliance with the law. … This product is readily available at many garden centers and can be sprinkled onto and watered into the soil according to the manufacturer's instructions. This is especially important if you’ve had problems with grubs in the past. 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. Most of the grub control products available work best as a preventative, keeping the newly hatched grub … A drought-stressed, underfed lawn will show grub damage faster, and with fewer grubs per 
square foot, than a properly-fed, well-maintained lawn. Timing of the Treatment for Grubs Makes all the Difference. Hire a lawn care company to perform a preventative grub control treatment to your lawn EVERY year as part of a proactive lawn care program. The Right Time for Grub Treatment Coincides with Periods Having the Most Damage. If you’ve had problems in early summer with beetles, and by late summer dead patches of grass have appeared in your lawn, you probably have grubs. According to research from Michigan State University, products that only contain lambda-cyhalothrin, gamma-cyhalothrin, bifenthrin, deltamethrin, cyfluthrin or permethrin do not work for grub control. 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. These are the larvae of Japanese and June beetles, as well as Chafers. 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. Product availability is subject to change depending on registration status in the State of New Hampshire and other factors. If you want … If you have a very high concentration of grubs – 10 or more grubs per square foot – treatment may be necessary to maintain healthy grass. Disclaimer: The use of specific brand or trade names in this article is for educational purposes only. How do I know if I have lawn grubs? However it is important to treat at the right time of year, based on the white grubs’ life cycle, to ensure good control. You need to apply the appropriate species of nematode at the appropriate time of year. To see if lawn grubs are active in your turf, use a shovel to dig up a section of your lawn where you suspect the grubs … When to Control Grubs Controls are most effective on immature grubs. How to Treat Grubs in Your Lawn By Anthony Smith Things You'll Need. However, contacting your local extension office to speak to the master gardener … This chemical also controls caterpillars such as webworms and armyworms. Some of the best practices we recommend are: The two natural products we are asked about most are milky spore and nematodes. This is why it is important to identify the grub before deciding to treat. 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. To determine the extent of infestation or which areas require treatment, dig up small sections of lawn. Healthier grass can tolerate more grub feeding, and all grass can tolerate some grub feeding. Their effectiveness is also quite variable, with wide ranging results at as low as 20 to 25% control. Beetles fly, mate, then lay eggs in the soil. When you’ve gone through and determined for certain that you have grubs and need to treat, you can use a curative pesticide that will kill grubs almost immediately. Come March, lawns already under attack by grubs are best treated in early spring or fall. How to Treat Japanese Beetles & Grubs: Stage 1 Dormant Grub: October – March. If using a preventative treatment against grubs, aim to apply just before the grubs hatch – typically late spring or early summer. Preventative grub control can save you a lot of money in the long run. At that stage, they will have started eating roots. Grubs are dirty white, soft bodied, and robust with a brown head and six well-developed legs, with exception of green June beetle grubs, which do not have well-developed legs. White grubs … Purchasing nematodes from a reputable supplier and applying them right away are important. The best treatment may kill only 60% of the grubs… Milky spore is a spreadable bacteria known as Bacillus popilliae that can be used … Not necessarily, because the adult stage of grubs are flying beetles that can travel to your garden from outside your property. However, Acelepryn is a non-toxic insect killer. While the research on milky spore in our region hasn’t been revisited recently, the latest research findings are that spring soils in Northern New England are too cold for milky spore to be effective. Presently, trichlorfon (Dylox or Bayer 24-Hour Grub Control) and Sevin are the fastest-acting, most effective homeowner insecticides for curative grub control. Don’t worry about the spring stage where large grubs do a quick spring feeding before becoming beetles. To ensure the grubs are eradicated, apply the treatment again in two weeks. Grub Prevention Treatment. If the average count is between five and 10, whether or not to control depends on the health of your lawn, your tolerance for damage to the lawn, and the presence of natural controls. Treatment for white grubs in late summer is problematic. A few signs will tell you that your lawn needs treatment. This treatment helps to ensure grub and bug free turf for 3 months from delivery. Grubs burrow deep into the soil and rest through the winter. If there are 10 or more grubs, treat your lawn. These pests can be controlled, and your lawn can be restored back to its healthy state by getting rid of grub … Visible lawn grub damage can be seen from late summer to early fall. To activate the product, water immediately after applying. 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. There may be some obvious signs, like irregular brown patches of grass. It is the best natural option to treat for grubs in your lawn if you avoid chemical products. Likewise, if you’re using a spreader for a granular product, ensure you limit your application to lawn areas that have been mowed and do have a grub infestation. When the turf is lifted to expose the grubs, they usually will be lying on their sides in a C-shaped position. GrubEx with the active ingredient chlorantraniliprole is used for preventive soil treatment. larvae of the European Chafer beetle. Suggested treatment time is between August 1 and September 15. Otherwise, use it when it … Milky spore comes in two formulations, granules and powder. 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. Look for irregular brown patches of lawn that peel away easily from the soil, like carpet. Bayer’s 24 hour Grub Killer Plus is formulated to work overnight while killing on contact. In the early spring, for example, many homeowners suspect grub damage because of the condition of their lawn after snow melt. The two types of curative pesticides you can use are carbaryl and trichlorfon (sold under the brand name Dylox). Think of grubs as having 4 distinct stages during the year. Grub preventatives are meant to kill the grub larvae that is recently hatched during the late summer. These must be applied before mid-August. Some species of nematodes only control certain species of grubs, so just like with milky spore, identifying what species of grubs you have is important. Nematodes also need to be applied when the species of grubs they control are active in the soil. The best treatment for these grubs is a chemical called “Imidacloprid”. Most severe injury to plants is caused by large (third stage or instar) grubs feeding on roots in the fall and spring. The key to controlling grubs is to kill them before they hatch and begin to cause damage to your lawn. Ingredients such as carbaryl, trichlorfon or zeta-cypermethrin are curative and work on contact with grubs. Often times grub damaged grass will pull out very easily at the roots. Part of effective lawn treatment for grubs involves identifying the grubs and the signs of their presence. There might be some minor flaws in your lawn when you notice them properly. For many homeowners, grub control products are an important part of the annual lawn care routine. In several places in the summer, the grass you ’ ve had problems with.! Decide to treat them early during their second summer signs, like irregular brown patches in lawn! Way to be applied in the fall earthworms, which are beneficial to the lawn of. On the roots and locations that means July or August is the latest greatest. Used for grubs Makes all the people who have faced this issue their damage apparent. 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