There are two types of treatments: preventive and curative. Curative treatments applied in late summer or early fall are more effective than spring applications because the grubs are smaller and easier to control. When spring arrives, these grubs are still too large to try to control. Once the egg hatches, the grubs will go through three larval stages or instars during their development. Japanese Beetles were accidentally introduced to the east coast in 1916 in a shipment of iris bulbs. Brands such as Dylox and Bayer 24 Hour Grub Control are easily found in area garden centers. No matter which product or approach is selected, be sure to read and follow label directions. 3). Control is usually rapid (days after treatment) and infected grubs turn a reddish-brown color. The spores germinate inside the grubs, eventually killing them. Japanese Beetles are easy to identify, thanks to their unique colors. Adult Japanese beetles often return to the same area year after year to mate and lay eggs. Right around late July or early August, Japanese beetle eggs become lawn grubs that eat your grass all winter. This will minimize the spray impact on any foraging bee activity during application periods. The eggs hatch in about two weeks and the larvae (white grubs) feed on and can damage turfgrass. The majority of grub worms come from Japanese beetles, which lay their eggs in midsummer in sunny areas of the lawn. Grubs are easiest to control when they are young, so take preventative action in late spring through early summer. Grubs are the larvae of Japanese beetles, June beetles, chafers, and others. Begin treatment as soon as beetles appear, before damage is done. DoMyOwn has the products needed to control an infestation and prevent new beetles from invading your lawn. Though most beetles lay their eggs in the spring, the fall is the best time to treat for lawn grub infestations. If there are more than a dozen grubs in this small area, consider treating your lawn with some type of grub control. In the third year of the cycle, the grubs rise out of the soil as Japanese beetles. Originally published in the Kenosha News. We sent a confirmation email to this rewards account. Pheromone lure traps are not recommended for Japanese beetles. Origin and distribution. It is an employ, Article written by Mary Metten, Health and Well-being Extension Educator. These pesticides should be applied in July or August, when young grubs are feeding. Connect with your County Extension Office », Find an Extension employee in our staff directory », Get the latest news and updates on Extension's work around the state, Feedback, questions or accessibility issues: info@extension.wisc.edu | © 2020 The Board of Regents of the University of Wisconsin System Privacy Policy | Non-Discrimination Policy | Discrimination and Harassment Complaints | Disability Accommodation Requests | Civil Rights. Established in Wisconsin in 1990’s, the Japanese beetle (Popillia japonica) is a voracious defoliator of many landscape and garden plants. Traps are … They will feed on grass roots for the next 4 to 6 weeks. It prevents damage to your lawn caused by Japanese beetles; It also helps prevent the damage they can cause to your trees and shrubs; Our natural grub control solution is safe for kids, pets, and environment ; Best Time For Grub Worm Treatment in Minnesota: Summer A good indicator of a white grub infestation is skunks digging up the lawn. It can be found in the product beetleGONE!, which is approved for organic production. Photo Credit: Jeff Hahn, University of Minnesota. Therefore, treating your lawn one year as a mechanism for preventing adult beetles the following year will not work. Spring treatment is less effective as grubs feed less at that time. It has low toxicity to bees, other pollinators, pets, and humans. Once applied, milky spore powder will work it way into the soil where it will be ingested by the Japanese beetle grubs. June beetles are brown, shaped similarly but a little bit more rounded, like a loaf of bread. If you haven’t made such a preemptive strike and the beetles are feeding, products that kill on contact and provide systemic protection are most effective. The active ingredient in this grub preventer is Imidacloprid. A great choice would be a treatment that controls grubs and Japanese beetles at least a complete season. Japanese beetles have a one-year (annual) life cycle. Grubs do not typically affect turf type tall fescue lawns. Control more than just grubs. Remember that the Bayer Advanced Season Long Grub Control is good for all season use. Once grubs are present, late July to September, they can still be treated but management is less effective. How to Get Rid of Japanese Beetle Grubs in Fall. Following are some best management options to control Japanese beetle adults and grub that can minimize impacts on pollinators: We teach, learn, lead and serve, connecting people with the University of Wisconsin, and engaging with them in transforming lives and communities. Milky spore comes in two formulations, granules and powder. Be sure to read the insecticide product label for its instruction and safety precautions. Read the product label for spray application instruction. As you can see in the handy chart below, a grub’s life cycle begins in the summer, when adult Japanese beetles lay eggs underneath the soil. Grub Worm Identification and treatment. Both adult Japanese beetles and their larvae (known as grubs) can greatly damage gardens and yards if they are not treated. Established in Wisconsin in the 1990s, the Japanese beetle (Popillia japonica) is a voracious defoliator of many landscape and garden plants. The grub changes into the pupa, which is the resting stage, and the pupa then changes into the adult beetle. Japanese Beetle Grub Control Benefits. Japanese Beetle. One application of Scotts® GrubEx® 1 can kill and prevent grubs for up to 4 months. BioAdvanced Grub Killer Plus is a great product that is easy to track down. Japanese beetle: Tips for your lawn DOWNLOAD FILE . In fact, 2017 was the year when the highest populations were recorded thus far. Once grubs are present, late July to September, they can still be treated but management is less effective. Japanese beetle grubs can be a major turf pest. Right around late July or early August, Japanese beetle eggs become lawn grubs that eat your grass all winter. The powder only has to be applied one time using a specially designed applicator. These animals all love to dine on large, mature grubs. Japanese beetles will survive and emerge from so many places surrounding you and your property, that what you do to the … Mature larvae are 1–2 inches (25–55 mm) in length. Come March, lawns already under attack by grubs are best treated in early spring or fall. So fight the urge to wait and get these products down 60-90 days before Japanese Beetles lay their eggs. How to Detect Grub Worms. Japanese beetles are tough to control in the landscape especially when bees and other beneficial insects are active during the same time. Managing Japanese Beetle Adults & Grubs While Minimizing Impacts on Pollinators. Lawns already under attack by grubs are best treated in early fall. Btg has a broad label and can be used on a wide range of vegetables and fruits. Stage 4 Adult: June – August. We reserve the right to change prices without notice and to correct errors. Rather than have to crop this powder over your lawn, worrying about timing and frequency, you can leave it to us. A common active ingredient is Dylox. Stage 3 Pupa: April – June. How & When to Treat Japanese Beetles & Grubs, Bayer Advanced 12 Month Tree & Shrub Insect Control, Bayer Advanced Dual Action Rose & Flower Insect Killer. Japanese Beetles will emerge from the larva stage in early June, eat your lovely flowers and shrubs and mate until late July. Therefore, it seems logical that killing adult beetles one year should prevent grub damage the next. Japanese beetle grubs can damage turfgrass in the same manner as other turfgrass white grubs. Apply Bayer Advanced 24 Hour Grub Killer Plus for fast results. Japanese beetles and northern masked chafer grubs are the predominant damaging white grub species associated with home lawns. Having the ability, or perceived ability, to do several things simultaneously is how many of us attempt to keep up with high demands at work, home and everywhere in between. Some move as much as 12 inches below the surface. White grub treatment threshold is … Timing will vary by geographic location. Preventive treatments are the most effective and are applied in late June and early July as eggs are first being laid. Price: $117.25. Grubs burrow deep into the soil and rest through the winter. That’s why it’s so important to let BEST’s professionals take care of Japanese beetle treatment for you. that might be contributing to problems very soon. Japanese beetle traps contain a pheromone that attracts both male and female beetles. The Japanese beetle adult females lay their eggs in grassy areas all over the county and not exclusively in your lawn. Some target pests that have been controlled (to varying extents) by H. bacteriophora in field tests are white grubs, Japanese beetle, grubs, northern masked chafer, black vine weevil, strawberry root weevil, citrus root weevil, Colorado potato beetle, cucumber beetles, red imported fire ant, several other soil-inhabiting insects, and filth fly maggots in manure. … This may help in preventing the adult beetles from laying their eggs in dry turf areas. As adult feeding subsides, the white grub stage will take over. Several other white grub species including Asiatic garden beetle, European chafer, green June beetle, May and June beetles, and Oriental beetle are occasionally observed in home lawns and may cause significant damage. Repeat the application as needed according to the product label until the beetle activity subsides for the season. Japanese beetle grubs can be sampled in late summer (August to October) and late spring (April to June). Treatment thresholds and identification tips are discussed below in the description of each major type of grub. Starting in June try Bayer Advanced Dual Action Rose & Flower Insect Killer. Following are some best management options to control Japanese beetle adults and grub that can minimize impacts on pollinators: ... Mow any flowering weeds before scheduling liquid applications of preventive or curative grub treatment products in turf areas. To control this invasive pest, many people are interested in using less or no insecticides, and other control options that are safer for home-owners and also compatible with or… How to Control Adults. The best time to treat Japanese beetle white grubs is July through mid-September when they are small or moderate-sized. Contact a lawn and ornamental professional for guidance and assistance to control Japanese beetle populations. How to Get Rid of Japanese Beetle Grubs in Fall . We've added a virtual rewards card to your account. The grubs are the ones that eat at the roots of the grass plants. It has a stronger calling card scent than a trail of ants on spilled lemonade. Bayer Advanced 12 Month Tree & Shrub Insect Control or All-in-One Rose & Flower Care are best. Article by Vijai Pandian, UW Madison Extension and PJ Liesch, UW Madison Entomology. Some move as much as 12 inches below the surface. Grubs rise from their winter rest and begin feeding on roots, causing extensive damage to turf grasses. Step 6 Feeding Larva:  August – October. Preventive treatments are the most effective and are applied in late June and early July as eggs are first being laid. When fighting this serious pest, it’s important acknowledging that both an adult and immature form are dangerous. Although the peak of adult feeding has passed for 2017, the last of the adults will be around for another 2 weeks. that might be contributing to problems very soon. Turf should not be irrigated during the beetle's active season to help prevent the insect from laying eggs there. This is especially important if you’ve had problems with grubs in the past. Since then they have slowly and steadily made their way westward. Two treatments between June and August are generally best to solve this problem. While you may be seeing grub damage now, you may start seeing ant hills in your lawn. We live in a fast-paced society where high stimulation is more and more a way of life. Japanese Beetle: This introduced pest is now found in most states east of the Mississippi River except Florida. Mowing of flowering weeds is not needed if using granular or pelleted grub treatment products in the turf followed by light irrigation to move the product into the thatch layer. For those desiring to have more direct hands-on learning, exploring apprenticeship opportunities may be more advantageous. Since then they have slowly and steadily made their way westward. Of most concern is the Japanese beetle, a voracious feeder on the foliage of many ornamental and garden plants that often warrants treatment as an adult. This will minimize the spray impact on any foraging bee activity during application periods. Stage 1 Dormant Grub: October – March. Milky spore is a common grub treatment, but it will only affect Japanese beetle white grubs. The granules must be applied multiple times over two years using a spreader. In older established neighborhoods grub populations are generally kept in balance by natural factors such as parasites, predators, and diseases. Japanese beetles and northern masked chafer grubs are the predominant damaging white grub species associated with home lawns. The best grub killer product in most cases is one that offers treatment benefits that extend beyond just grubs. However, most of the damage to ornamentals and turf grass happens during the spring and fall the second year. The larval stage is a C-shaped white grub similar in appearance to the June beetle, rose chafer and European chafer. Originally published in the Kenosha News. Please enter the confirmation code we emailed you to continue. A biological treatment method, useful against only Japanese beetle grubs, is the application of milky spore bacteria. Whatever the reason, if your lawn is showing signs of being under attack from grubs in early fall then a curative treatment will help manage your grub problems. Roses, birches, lindens, grapes, raspberries, Norway maples, beans, apples, plums, crabapples, elms, beech, asparagus and rhubarb are some of its favorite plant species. Grubs lay their eggs in soil under turf, where there’s an ample supply of organic matter in the soil to eat, including grass roots. Japanese beetle and June bug grubs are hatching right now and if you kill them before they grow to be large, tough, indestructible grubs, you’ll be way ahead of the game. Small shrubs like roses, and young Japanese maples can be protected using nylon insect screens (mesh size