A properly maintained lawn can tolerate more grubs per square foot than a stressed lawn. If applied in early spring, the pesticide may move through the soil or partially degrade by the time the grubs hatch in late July. If a corrective grub control is needed after grubs have been found feeding on a lawn, we have most frequently used Dylox ® (Trichlorfon, Dimethyl) to provide a quick method to kill grubs in lawns. If you see 6 or more grubs in each area, it may be time for action. If you’re applying corrective grub control, your answer is “The sooner the better.” This material won’t work until it reaches the grubs. If you are asking this question in Spring or early Summer, you’ll need to direct your attention to the preventative materials. Oriental Beetle. Types of Grubs. Asiatic Garden Beetle. 4. One application in the spring or early summer kills and prevents grubs for 4 months, guaranteed (satisfaction guaranteed or your money back) Helps prevent root damage caused by insects for a stronger lawn. Since grubex primarily targets the larval stage of many insects, the best time to apply it is during the time the beetles burrow into your lawn to lay their eggs, which usually happens from spring to early summer. Merit 0.5 G is for broadcast application on and around turfgrass, ornamentals, trees, shrubs, flowers, groundcovers, and in and around commercial or residential buildings. Some of our lawn care programs have included preventative grub control treatments of Merit ® (imidacloprid), Allectus ® (combination of imidacloprid and bifenthrin), or Acelepryn ® (cholrantraniliprole). Hence, the best time to apply Grubex is between spring and early summer. Here in CT, 1st and 2nd week of July seems to be the best time. As a result of this late year gorging, grubs won’t typically look to eat much come spring thus negating the effectiveness of any grub control products you may apply once the ground begins to thaw. Prevent grubs from damaging your lawn with Scotts® GrubEx1® Season Long Grub Killer. To activate the product, water immediately after applying. 3. Stocking up on food, they’ll then dig in a good 4-8 inches once the cold sets in and stay put. A drought-stressed, underfed lawn will show grub damage faster, and with fewer grubs per square foot, than a properly-fed, well-maintained lawn. The key to controlling grubs is to kill them before they hatch and begin to cause damage to your lawn. When the soil warms up again in the spring, the large, mature grubs move back into the upper soil levels, where they transform into adult beetles that emerge in early summer and start the whole process over again. Easily apply with a Scotts broadcast, drop, handheld, or Wizz spreader and stop grubs before they damage your lawn. July and early August is the ideal time to prevent grubs. The larvae will continue to feed in the early spring before pupating and eventually emerging as new adults. Sherry said that choosing the appropriate weed killer depends on identifying the weed. Bayer Advanced Complete Insect Killer Granules - Granular cyfluthrin 0.05% and imidacloprid 0.15% Bayer Advanced Season Long Grub Control and Turf Revitalizer - Granular imidacloprid 0.25% and fertilizer Apply between June 1 and July 15 for best results. These animals all love to dine on large, mature grubs. I am planning to apply my GrubEx (chlorantraniliprole) here in Bedford, NH around May 1st. Keep in mind you should apply liquid and granular products in a dry environment to prevent runoff. Neonicotinoids, for instance, must be applied when females are laying eggs, usually between mid-June and early August, although you should update the timing, depending on your own observations. A few grubs aren't a problem, but if you see lots of them when you turn the soil, take action. Grubex is Imichloprid again. Consult with the material’s label for these recommendations. Some sights suggest Grubex applied to lawn in spring, others say Central Pa application best in June. But if more than half the lawn is covered in weeds, it’s time to start the lawn all over again. It won't hurt your flowers. Available curative products. Don’t let these issues keep you from loving your lawn. Using a drop spreader, scatter the pellets evenly around the yard. You will also note a direction on the package to not apply to waterlogged soils and to water after application. Treating in late summer or early fall is ideal, as that is when the smaller, young grubs are most susceptible to nematodes. Home // Blog // How Late Can I Put Down Grub Control? It’s basically a “quick-kill” product. Apply in Spring to Early Summer. Apply during spring or early summer to kill grubs as they develop. Whichever material you go with, the material will need to be watered in soon after applying. If you’re applying corrective grub control, your answer is “The sooner the better.” Sevin Lawn Insect Granules - Granular carbaryl 2.0% Apply in September or October to active grubs. With most of lawn care, timing is important. European Chafer. 2.) If you put a preventative grub control treatment down sometime in June through mid-July you’ll be fine. Scotts Grubex 0 Stores ... of Scott’s Grubex. I actually bought a bag of Grubex one JANUARY for some house plants. That is the right timing where you want to apply Grubex and stop the eggs from emerging. These materials are applied well before grubs hatch in late Summer and can provide several months of control. Water the treatment in the lawn within 2 weeks after the application. Chlorantraniliprole (the active ingredient in Scotts GrubEx2) needs to be applied in mid-April to mid-May for best results. Read the label of the material you intend to use. Apply between June 1 and July 15 for best results. These have consistently been the industry standard materials to prevent grub damage. I see one sight suggesting not to apply until sighting of mature beetles. Apply spring to early summer. Keep it light, though, and use a slow-release or organic fertilizer. • Kills 25% more grub types vs. original GrubEx® • Scotts® products are designed to work with Scotts® spreaders. 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. Preventative products remain ready to kill grubs after they first hatch and start to feed. Each year can slightly vary. Lawn Science uses the Acelepryn product because Acelepryn is friendlier toward pollinators like bees and butterflies. When the eggs start hatching, the grub treatment will kill the emerging larvae, so they will not develop to become mature insects. If weeds are in the lawn, a manual application of weed killer directly on the offending plant should do the trick. Fall might not be a very good time to put down grub control. Was Halofenazide for a year or two, but is now back to th good stuff. Before the dead patches even appear, your lawn feels spongy when stepped on, as it it were freshly laid sod. When you apply grub killer depends on the type you decide to use. Different parts of the country may see egg laying earlier in the year, not sure. In spring or early summer, apply a preventative grub control product, such as Scotts® GrubEx®1 to your lawn, following label directions. 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