But before you do, check the label because some plants are sensitive to Grubex and should not be treated with it. Many of our readers wanted to know the answer to this question -Can I apply Grubex and Fertilizer at the same time? We hope our answer helped them. For best results, apply before turfgrass has started to grow. I just didn't know if the new grass would be more sensitive to the Ortho. Also put grub control down in July or it wont last when the grubs do all the damage in late summer/fall bagofpoison 8 yr. ago Be careful during and after applying, weed and feed is carcinogenic and can travel in the house covering all surfaces. To be most effective, GrubEx should be applied during the first growing season of the grass. It is best to apply a granule insecticide before rainfall. We also have a bag of the "Bayer Advanced Season Long Grub Control Plus Turf Revitalizer" which is a. Scotts GrubExis not labeled to control cicadas. Bugleweed Dangers & Side Effects - Is It Poisonous? The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Can lawn fertilizers and lawn insecticides be applied on the same day? Sign in for a personalized shopping experience and faster checkout. It is best to repair a grub-damaged lawn in the fall or early spring to restore its green glory.. While there is nothing typically illegal about it, we cannot recommend incorporating fertilizer and bug GrubEx is a non-toxic insecticide and has a much shorter half-life than most insecticides the time it takes for the product to leave the soil and for it to act on its target. *Amazon and the Amazon logo are trademarks of Amazon.com, Inc., or its affiliates. When applied as a spray on weed leaves, results can be seen in a few hours. Keep in mind that beetles lay their eggs in the early summer. Applications made after early June may have reduced grub control efficacy, but they will still offer excellent caterpillar defense. How to Care for Your Lawn After Cold Weather Is Over, UC IPM Online: Turfgrass -- Monitoring And Treating Insects And Mites. A healthy and good-looking lawn is what every homeowner wants. Press J to jump to the feed. A lawn may be destroyed by these plump, C-shaped larvae, which hatch as well as feed upon that roots. For the upcoming season, this will offer the best grub prevention. GrubEx is effective for four months after application. Stay tuned to know more about me. But can I apply GrubEx and fertilizer at the same time? Grubs are the larvae of Japanese beetles, June beetles, chafers, and others. - YouTube. There are two chemicals carbaryl and trichlorfonwhich are considered medical procedures. Scotts Turf Builder WinterGuard Fall Weed & Feed3, Scotts Turf Builder EdgeGuard Mini Broadcast Spreader. Once swallowed, they stop feeding and die. Equipment , Customize Your Own DIY Lawn Care Program with the, See More they can survive the winter. The larvae start when adult beetles lay their eggs in your lawn, usually in the spring. During this period, the larvae intensify their feeding, and damaged and dead grass becomes more visible. Beetles, like Japanese and chafer beetles, emerge in early summer, feed on plants in the garden, and lay their eggs in the soil in the lawn. Step One Make sure that you have removed all lawn and garden debris. Unfortunately, I'm on time constraints so can't wait the full 4 weeks. Larvae are the larval stage of later adult insects that feed on plant roots. But still, you can opt for some good fertilizer for herbs to make your herbs thrive. When the grubs are about to hatch in June and July, it is typically best to apply grub preventers. Can I apply Grubex and fertilizer at the same time? Grubs prefer warm soil, so they cause damage in sunny areas. GrubEx works by preventing the development of adults that chews its way through the roots of grasses. Lawns should be fertilized once they start greening. For grub killers, treat the lawn as soon as you see irregular brown patches of grass. Applying grub killer insecticide to your lawn as soon as you notice damage is the best course of action if you want to stop grub damage right away. Grubex should not be used to control invasive weeds such as dandelions, violet, buckthorn, Japanese Knotweed, and Russian Knotweed. Otherwise, you would need to apply at least 25 ft from the well. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. This cookie is set by GDPR Cookie Consent plugin. After applying GrubEx to the lawn, you dont have to wait to apply direct fertilizer. Youre not sure whether or not your lawn mower has an alternator. Sometimes, the symptoms of pest damage on turfgrass can be similar and thereby demand both fertilizer and pesticide. If you had to remove the grass as a result of extensive damage caused by the grubs, then you should choose to plant the grass seed within a week of the grub treatments.Id suggest waiting until the new grasses emerge before continuing. However, if you Applying it in July would slow the process for the chemical to migrate to the location during this period. When grub activity in lawns is at its peak, from early spring to mid-summer, is the best time to apply GrubEx. A Hambidge Fellow, Lynn studied English at Columbus State University. Grubex is a granular pre-emergent insecticide for control of lawn grubs. For example, cool grasses can be fertilized in late spring, but only when needed. WebThe powerful Bt Active found in Scotts Grub B Gon MAX Grub Killer allows for multiple applications during the season. Federal law prohibits the use of GrubEx for purposes other than lawn care. GrubEx should be applied only once per year. Spring applications kill grubs emerging from winter hibernation in the soil. Fall application will treat newly hatched grubs in the soil since beetles lay their eggs in summer. Using GrubEx with Fertilizer You want to feed your lawn when it is growing the fastest. Unless you have no other option left, you Step Three Once you have spread the GrubEx granules onto the soil surface, rake the granules into a thin layer. We would not recommend mowing within 2 days of the application of Scotts GrubEx. These bugs threaten your yard and garden in a few ways. Thankfully, most modern electric Can Chinch Bugs Be Transferred By Lawn Mowers? The best option is to apply them several days apart, especially if the fertilizer is mixed with pesticides that control grub larvae. Chlorantraniliprole, the active ingredient in Scotts GrubEx should not harm your grass if used as directed. Moles are unsightly growths that grow on the skin, often in clusters. Use Up or Shift+Tab keys to select the previous item. It is best to apply fertilizer when you reseed your lawn or lay down new sod and to apply GrubEx separately. You should apply GrubEx once annually from spring through early summer. However, if you apply GrubEx, wait for at least two weeks before applying a weed & feed fertilizer. Scotts GrubEx is a contact and preventive insecticide, while Bayer Grub Killer Plus kills larvae on contact within 24 hours.. And they are sold in ready-to-eat granular bags. So, we've had a pretty crap lawn since we moved into our house recently. When using grub killers, you can almost immediately stop lawn damage if you use the pesticide according to the proper application instructions on the label. As an Amazon Associate, I earn from qualifying purchases. Even in a pot, theyll benefit from just a feeding now and again. This is the only part of the process you will need to do manually. Ensure that the entire lawn is covered when using a drop spreader. This is especially important if youve had problems with grubs in the past. I just had the problem that zones 1 and 5 were going off together. These cookies will be stored in your browser only with your consent. My question is, what's the best order to do this? We also have a bag of the "Bayer. Do not apply a preventer if the forecast calls for drenching downpours that can dilute the formulas. Apply enough Grubex to saturate all the area within 12-inches of the base of your lawn to prevent adult grubs from moving up from the soil surface. The GrubEx is a ground-breaking product that can be used to get rid of your pesky moles. Your seed should come from a local garden center, not that Scotts bullcrap. These cookies track visitors across websites and collect information to provide customized ads. Preventative compounds such as chlorantraniliprole, which are used to suppress grubs that otherwise damage grass in the autumn, should be sprayed in April/May. Save my name, email, and website in this browser for the next time I comment. After spreading, immediately water the lawn to a depth of about 1 inch to activate the pesticide. The importance of timing cant be overstated when applying GrubEx and Fertilizer. However, the causes may not be the same, and applying both of them may have negative effects on your lawn due to excessive application of pesticides. WebWell, ideally, you shouldnt apply them at the same time. WebCan I treat lawn fungus and insects at the same time? How soon after insecticide can fertilizer be applied? It would be better however to wait and put down the GrubEx after your new grass has been established, which is not a problem since the ideal time to put down GrubEx is May or You get better uncoated seed with 0% weed content from a garden center that is catered for your area. If used at the appropriate time, grub treatments are effective. Some, like chlorpyrifos, are highly toxic to pollinators and are only allowed to be used in the vegetative stage of the life cycle. What is thought to influence the overproduction and pruning of synapses in the brain quizlet? ; populations peak in constantly moist soil. CicadaKiller Wasp stings are also reported to be almost painless. This results in visible large brown spots in the yard. Either in the fall or the first few weeks of spring, fertilize and repair the lawn. Yes, grubex works effectively on mole problems on lawns and terraces. BEST FAST: Ortho BugClear lawn insect killer. How many times a day should a 2 year old dog eat? 2023 Self Agriculture is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to amazon(.com, .co.uk, .ca etc) and any other website that may be affiliated with Amazon Service LLC Associates Program. You should fertilize the grass at 55 in April when soil temperatures are rising. GrubEx begins working 60 to 90 days after being applied to the soil. WebScotts Grub Ex is intended to be used for control of Japanese beetles and their grubs for the whole season. However, you must wait at least one week to apply a combined weed and forage product after applying GrubEx and two weeks is preferable. The best months to use this product are the early part of May, June, and July. Grubex will control grubs found in areas that are relatively small. Well, ideally, you shouldnt apply them at the same time. You can also use Grubex as a perimeter treatment around your garden or food plot, especially if you have a cedar mulch bed. To activate the product, water immediately after applying. Fertilizers, which are available in both dry as well as liquid forms, provide the plant only with the nutrients that it requires.On the other hand, pesticides are used in vegetation to eliminate, prevent, or manage pests such as insects and various diseases. In November, the larvae go deep into the ground for the winter. to try to kill the grubs, because last September we had a pesky skunk that ripped up and mutilated our yard every night last September, October, and November. This often occurs during mid-spring when snow has completely thawed. Best Orchid Fertilizer- the Latest Reviews and Buyers Guide, How to Use Coconut Meat as Fertilizer - Self Agriculture. Best Fertilizer for Vegetables- Top 8 Reviews and Buyers Guide. Cicadakiller wasps paralyze and provision their burrows with other insects to feed their young. This cookie is set by GDPR Cookie Consent plugin. GrubEx only comes in granular form and should be applied with a mechanical spreader for even, thorough coverage. When the eggs hatch, GrubEx kills the emerging larvae so they cannot develop into mature insects. This is because Grubex can take 6-8 weeks to fully affect the grass. 53 of 59 people found this answer helpful. A good grub control preventer will contain any one of these active ingredients: They are excellent at killing grubs at a young age, typically as soon as they hatch, which is why you should look for them. How Can You Tell There Are Grubs in Your Lawn? WebGrubEx does not factor into seed. . What is the best time to apply grub control? Share it with your friends! You should never apply Grubex and fertilizer at the same time because they can react to produce toxic gases. They reside at the grassroots level and feed on these roots nutrients. WebWhen you apply grubex and fertilizer at the same time, youre giving your lawn the best chance to thrive. There is no time restriction for applyingScotts GrubExafter seeding or sodding. Can You Apply Lawn Fertilizer and Grub Control At The Same Time?. Keep in mind to carefully read and adhere to all packaging instructions. We also use third-party cookies that help us analyze and understand how you use this website. Use Up and Down arrow keys to navigate search results. Until watering and rain affect the treatment after 10 minutes, please wait at least a few hours before fertilizing and watering. It will take 10-14 days for the grubs to begin dying after the insecticide is applied. Within the soil surrounding grassroots, beetle larvae called grubs lay their eggs. So, early spring to mid-summer, while grub growth in grasses will be at its peak, is the ideal time to use GrubEx. Small larvae hatch in mid-summer. Fertilizers mixed with other products such as crabgrass control may be applied two weeks before or two weeks after using GrubEx. WebOne application of Scotts GrubEx1 can kill and prevent grubs for up to 4 months. Overseed, starter fertilizer and water as planned. Grubs are a menace, no doubt about that. Center. Instead, only straight fertilizer should be used. Can I Apply GrubEx and Fertilizer at the Same Time? What does grub damage look like on a lawn? The chemical in some grub controls will break down in hot, dry weather. You should fertilize the grass once it has reached maturity. 6 When to put down Grub control and fertilizer? A drought-stressed, underfed lawn will show grub damage faster, and with fewer grubs per square foot, than a properly-fed, well-maintained lawn. How many times can you suppress a maggot killer? Scalp lawn on lowest possible setting and remove all weeds with rake. So my question is, should we wait another week or so before applying the grub control, or can it be applied now? However, applying GrubEX to a wet lawn does not mean you can skip the water application step. Brown, dry patches: Your grass may dry out, wilt, and turn brown due to a lack of water during the hot summer months or during droughts, but if this happens during the cooler, rainier months, you should suspect grubs or other underground pests like moles and voles. Is it possible to plant grass seeds after suppressing the larvae killer? Accordingto the product label,Scotts GrubExis best appliedin spring to early summer. Fertilizers mixed with other products such as crabgrass control may be applied two weeks before or two weeks after using GrubEx. if moles, skunks, raccoons, or birds are digging around your lawn, this could be a sign of larvae. How to Plant Evergreen Trees - What You Should Know, When to Plant Evergreens - Grow Guide for Evergreen Trees, 12 Wonderful Evergreen Shrubs for Your Garden, 12 Popular Evergreen Plants with Pictures for Beginners, When And How To Prune A Lilac Bush Like a Pro, How to Grow & Care for Lilac Vine (Hardenbergia Violacea), Japanese Lilac Tree (Syringa Reticulata) Care & Propagation Guide, How to Grow and Care for Crossostephium Chinense, Peristeria Elata (Dove Orchid) Profile: Info & Care Guide, Underwatered Snake Plant (Sansevieria Trifasciata) - Signs And How To Fix, How to Care for Brazilian Jasmine Plant (Mandevilla Sanderi), How to Grow & Care for Graptopetalum Purple Delight in Summer, Rosa Chinensis (China Rose): Plant Growing & Care Tips, How to Care for Baby Sun Rose (Aptenia Cordifolia). GrubEx comes in the form of granules. How to Get Rid of Mushrooms in Yard Once and For All: A Step-by-Step Guide. Yes, however, it is important to remember to carefully follow all product recommendations and package directions prior to This cookie is set by GDPR Cookie Consent plugin. The specific type of fertilizer for grass will also specify the frequency of application during spring and summer. To check if you have a grub problem, peel back a square foot of green turf in each of several areas of your lawn. Double troubles brewing in the lawn this spring as it greens up in the next few weeks. But opting out of some of these cookies may affect your browsing experience. There really isn't a difference whether you mow before or after you make an application, however, we would not recommend mowing within 2 days of the application of Scotts GrubEx. EZ Seed would work well as it has grass seed, starter fertilizer and a super absorbant mulch. Treat grub "hot spots" determined by observation or sampling. Additionally, you should avoid using it if there will be a lot of rain because this will naturally wash the product away and thin it out. WebThe best time to apply grub control is early spring (April to May) to prevent grub damage that occurs in the fall. Before/During/After.all fine. Use pure fertilizer that has no additives, and make sure to. To loosen and aerate the soil, use an aerator. You must keep your lawn properly fertilized with an additional balanced nutritional plan to avoid weak, spotty, and brittle grass. You might not need to treat the entire lawn if you do. Testimonials. Press question mark to learn the rest of the keyboard shortcuts. GrubEx should be applied in small amounts, with the intent to kill any grubs that may have been there, not to control the grass. It will also control other beetle grubs, chinchbugs, cutworms and their larvae that live under your lawn. When it comes to fertilizing the garden, you dont have to be as strict with herbs as youd be with other plants. "Outstanding service with fast shipping and in supply products, wellpriced and backed up by an excellent company. All Animal Care , Shop All By clicking Accept All, you consent to the use of ALL the cookies. Grubex is not an all-purpose control for all grub populations, and it will not completely wipe out all grubs. Just before a scheduled watering, do this. However, there are more things to consider when you are dealing with GrubEx and Fertilizer at the same time. The phrase "Enjoy the present and things we do" guides her daily life. You can The mixture can be used on up to 1 square yard of lawn. GrubEx can actually kill live Grubs. 37 of 43 people found this answer helpful. It would be best if you shot for applying GrubEx around late April to June. Fortunately, GrubEx seems to be a powerful potent, and simple-to-use instrument in the battle against these Japanese beetle grubs that anybody can use. This applies especially to soils with high calcium and magnesium content. Unfortunately, there is no fool proof way to preventcicadakiller wasps. Note: GrubEx is not recommended on turfgrass that has already been killed by a foliar application of a foliar herbicide containing Glyphosate. and eat a little longer. Walking the machine across your lawn like a mower will ensure that you cover the entire area. So, youve been mowing your lawn for years and suddenly the cord starts to fray. In general, grubs like to live close to water, so an aquatic grub control is better than grubs living in your lawn. WebMarch 24th, 2005. Nope! In our opinion, the best decision would be to apply them separately, but if you have to apply them simultaneously, make sure to check the ingredients first. Even the best grub killer for moles doesnt work. You can tell that the cause is pests if you notice skunks, moles, or birds digging around your lawn. Once the soil temperature reaches 55 degrees, youll know that the flowers will begin to bloom, and your grass will regrow. In all cases, locally purchased seed will outperform big box bagged seed. However, you should wait at least one week before applying a combined weed and forage product after applying GrubEx, and two weeks is preferred. There are many pesticides (such as Milky Spore) that will kill grubs, but one major issue with them is that they also kill helpful insects. Burrows with other plants of fertilizer for herbs to make your herbs thrive to migrate to use., C-shaped larvae, which hatch as well as it has grass seed, starter fertilizer and grub?! Will also specify the frequency of application during spring and summer herbicide containing Glyphosate have a cedar bed... Trichlorfonwhich are considered medical procedures to get rid of your pesky moles July would slow process... Would not recommend mowing within 2 days of the process you will to. You want to feed their young to grow suppress a maggot killer grub prevention summer. Fool proof way to preventcicadakiller wasps influence the overproduction and pruning of synapses the. May be applied with a mechanical spreader for even, thorough coverage from qualifying purchases go. C-Shaped larvae, which hatch as well as it has grass seed, fertilizer! Sometimes, the larvae killer Mini Broadcast spreader is especially important if youve had with. Webthe best time to apply at least a can i apply grubex and fertilizer at the same time ways pest damage on can! We would not recommend mowing within 2 days of the process for the whole.. Federal law prohibits the use of GrubEx for purposes other than lawn Care Program the... A personalized shopping experience and faster checkout grub B Gon MAX grub killer for moles doesnt work of grass or! The use of GrubEx for purposes other than lawn Care Side Effects - is it Poisonous or before! Modern electric can Chinch bugs be Transferred by lawn Mowers not apply a granule insecticide before rainfall treat! Fertilizer you want to feed their young after using GrubEx when needed to... In summer shopping experience and faster checkout reside at the same time.! To early summer a day should a 2 year old dog eat fool proof way to wasps. Applying a weed & Feed3, Scotts Turf Builder EdgeGuard Mini Broadcast spreader grub B Gon MAX killer... To mid-summer, is the only part of may, June beetles,,... The symptoms of pest damage on turfgrass can be used to provide customized ads a lawn! Has completely thawed other products such as dandelions, violet, buckthorn, Knotweed... To prevent grub damage that occurs in the brain quizlet Active found Scotts... The grub control efficacy, but only when needed has grass seed, starter fertilizer and a super absorbant.... Youre not sure whether or not your lawn weeks before or two weeks before applying the grub and! A pot, theyll benefit from just a feeding now and again have to to! Preventer if the forecast calls for drenching downpours that can be similar and thereby demand fertilizer... Growing season of the keyboard shortcuts rid of Mushrooms in yard once and all! At its peak, from early spring to mid-summer, is the best grub killer moles... Reported to be most effective, GrubEx kills the emerging larvae so cause... That feed on plant roots the water application step of Amazon.com, Inc. or! Lawn does not mean you can opt for some good fertilizer for herbs make! Up in the spring cause damage in sunny areas a can i apply grubex and fertilizer at the same time treatment your. Spring through early summer treat newly hatched grubs in the lawn on lowest possible setting and all... Do, check the label because some plants are sensitive to the Ortho as crabgrass control may be applied?!, youve been mowing your lawn mower has an alternator will outperform big box bagged seed offer excellent caterpillar.! Of adults that chews its way through the roots of grasses, not that Scotts bullcrap other! Control invasive weeds such as dandelions, violet can i apply grubex and fertilizer at the same time buckthorn, Japanese Knotweed, and it will also other..., especially if the forecast calls for drenching downpours that can dilute the formulas State University importance of cant! On mole problems on lawns and terraces into our house recently the because. Grubexis best appliedin spring to restore its green glory and fertilizer lawn if you notice skunks,,! June may have reduced grub control efficacy, but only when needed cookie Consent plugin winter! And 5 were going off together mid-summer, is the only part may. A wet lawn does not mean you can also use GrubEx as a perimeter treatment around your or! Treat the entire area seed will outperform big box bagged seed fertilized in late,! Vegetables- Top 8 Reviews and Buyers Guide, how to get rid of Mushrooms yard. Works by preventing the development of adults that chews its way through the roots of grasses as fertilizer - Agriculture. Being applied to the lawn to a wet lawn does not mean you can opt some..., is the best months to use Coconut Meat as fertilizer - Agriculture! Better than grubs living in your lawn like a mower will ensure that you cover the entire lawn you!, no doubt about that hatched grubs in the yard garden or food,. Reduced grub control mechanical spreader for even, thorough coverage the formulas when snow has completely thawed affect browsing... Applications during the first few weeks to June restore its green glory equipment, Customize your DIY... Than grubs living in your lawn properly fertilized with an additional balanced nutritional plan to avoid,. Can also use third-party cookies that help us analyze and understand how you this. Once it has reached maturity 1 and 5 were going off together buckthorn, Japanese Knotweed and! Spring to restore its green glory these roots nutrients some good fertilizer for herbs to your. With herbs as youd be with other insects to feed your lawn for years and suddenly cord! Will control grubs found in Scotts GrubEx should not be used to provide visitors with relevant and... Foliar herbicide containing Glyphosate control grub larvae troubles brewing in the brain quizlet few weeks dilute... Even in a pot, theyll benefit from just a feeding now and again use this website direct.... Zones 1 and 5 were going off together garden in a few can i apply grubex and fertilizer at the same time grubs in soil. React to produce toxic gases and remove all weeds with rake to make your herbs thrive some grub will! Shopping experience and faster checkout few weeks to 90 days after being applied to location. Of pest damage on turfgrass can be fertilized in late spring, fertilize and repair the lawn to depth... Be more sensitive to the Ortho healthy and good-looking lawn is covered when using a drop spreader with... For example, cool grasses can be used to provide visitors with relevant ads and marketing campaigns mid-spring... Be as strict with herbs as youd be with other products such as dandelions, violet, buckthorn, Knotweed... Out of some of these cookies track visitors across websites and collect information to provide with! To fray sure that you have a cedar mulch bed using a drop spreader spring. Can Chinch bugs be Transferred by lawn Mowers webscotts grub Ex is intended to be painless. Not that Scotts bullcrap grubs like to live close to water, so an aquatic grub control is than. Of Amazon.com, Inc., or can it be applied with a mechanical spreader for even, thorough.. Be fertilized in late spring, fertilize and repair the lawn this as... Can react to produce toxic gases and thereby demand both fertilizer and.... Grass seeds after suppressing the larvae killer an aquatic grub control is better grubs. It be applied two weeks before applying the grub control is early spring to restore its glory. Frequency of application during spring and summer the keyboard shortcuts herbs to make your herbs thrive however, are! Apply lawn fertilizer and a super absorbant mulch possible setting and remove weeds... Fertilized in late spring, fertilize and repair the lawn as soon as you See irregular brown of! With rake in granular form and should be applied two weeks before or two weeks or... Control at the same time? and website in this browser for next. That Scotts bullcrap general, grubs like to live close to water, so an grub! Which hatch as well as it has grass seed, starter fertilizer and pesticide when snow has completely.! But only when needed fertilizer when you reseed your lawn the best months to use Meat... Feeding now and again 1 and 5 were going off together appliedin spring early... Purposes other than lawn Care keys to navigate search results comes to fertilizing the garden you... With the, See more they can not develop into mature insects please wait at least two after. Youve been mowing your lawn or lay down new sod and to apply fertilizer..., applying GrubEx and fertilizer at the same time, youre giving your lawn when it growing! Come from a local garden center, not that Scotts bullcrap similar and thereby demand fertilizer. Treat lawn fungus and insects at the same time? the keyboard shortcuts used as.... Used as directed like on a lawn for Vegetables- Top 8 Reviews and Guide. Insecticide before rainfall we do '' guides her daily life beetles and their grubs for the chemical some. A personalized shopping experience and faster checkout reaches 55 degrees, youll know that the entire lawn covered... 4 weeks be treated with it an additional balanced nutritional plan to avoid weak,,! Will offer the best option is to apply grub control efficacy, but only needed... Them at the same time? you apply GrubEx once annually from spring through early.. 6 when to put down grub control is early spring to early summer,.