When Do You Put Down GrubEx?

Rate this post

When Do You Put Down GrubEx?

If you have ever had grub problems in your lawn, it’s for darn sure you don’t want them again. So this time of year I get the question: “When is the best time to spread GrubEx on my lawn?”

For those of you who know all about grubs you do not need to click here to read a blog posting I wrote last year that explains the grub cycle and how you protect your lawn from being destroyed. You just want to know when is the best time to put GrubEx down since there is such a wide application time frame listed on the package. You will also note a direction on the package to not apply to waterlogged soils and to water after application. Since the soils tend to be very wet this time of year and since the grubs will not be laying their eggs until summer, I asked our researchers when they apply GrubEx to their lawns. Their answer: May. (If you are reading this and May is in your rearview mirror and you have not put your GrubEx down yet this year, apply as soon as you can up until late summer.)

So I follow their advice and put my GrubEx down in Early May. Click here to get more info on Scotts GrubEx.

  1. Jim Casteel permalink

    I got a bad case of moles last year. Should I put down Grub X or Bug B Gon?

  2. Phyllis Harry permalink

    Where can I buy grass seed that will grow in sand and shade? For zip code

    46342

  3. Skip Berry permalink

    Does the application of GrubEx have to be timed around my Step 2 Weed/Feed application. Didn’t know if there was some minimum time I should separate my 2nd Weed/Feed and the GrubEx

  4. Scott S. permalink

    Can I spread Scott’s Water Smart Seed after applying Scott’s step 1 fertilizer with crab grass preventer.

  5. Terrell permalink

    Can I put down grubex and grass seed in the same week? Or how long do I need to wait?

    • Kathy Marcoux permalink

      Hi after I applied grub bgone what’s the next step to get my lawn back. Was I suppose to bring it right down to the earth or could I spray over the dead surface. New at lawn care.

    • LeAnn J. Rago permalink

      I live in Chicago. We are in a drought right now. A lot of people were watering constantly to keep up with no rain. Here it is mid July almost and suddenly I see yellowing patches so this is definate grubs. I noticed it a week earlier but it is spreading. Can I put grub-ex down now? Also can I mulch in fresh grass seed in these spots as well?

  6. this is jeff can i mix scotts grass seed with scotts starter fertilizer do it all on shot and do i have to water right way

  7. ok cool thanks

  8. I am a new homeowner in Michigan with grubs. After applying Grub-ex, how long should I wait to apply seeds?

  9. Will I be able to get any progress? I was told by a landscaper that I need several treatments before I seed. $60 a application, so I was thinking of doing it myself.

  10. Should I seed before putting down GrubEx? Can I do it all in one day? I love your blog! Its so informative for new homeowners like myself!

  11. I have been to a few sites about my ” Out of no where, out of conrol Grub issue” , and I am very pleased to see a response to every question!!! Very informative, Thank you!!!! Also other sites said other things. So you answered my question about how long I have to deal with the skunks, and watching every move my dog makes!!:) But I have GrubEx ready to go!!!!! From upstate NY

  12. Rosa Espi permalink

    How do i repair the damage that grubs and moles have created in my lawn? I bought grub ex and weed and feed, but i think that will only kill the grubs and dandelions whats the next step? Thank you in advance.

  13. Jodi permalink

    my dog eats a LOT of grass……. will the grub ex after it has been applied, water & dried, hurt my dog?

  14. can I use my weed killer for lawns and grubex at the same time?

  15. Greg permalink

    I have recently encountered a grub problem. Large sections of my yard have died, and I’ve found grubs in the lawn. We have a acre yard that needs to be treated, and we live on well water, so I’m not able to water in due to the stress on the well. Can I apply grubex before a rain, and let it wash into the soil? When should I apply grubex?

  16. richard rutkoskie permalink

    Grubs are only 18% of moles diet. Part are worms, that you can’t eliminate what do you do now?

  17. Joseph permalink

    I just found this Blog, and I love it. I am also a new homeowner and learning the ropes of building a nice lawn. However, the previous owners just did not take care of it. So I have ALOT of problems with it. Grubs, Ants, Clover, Moss, Various weeds that I don’t know what they are. So it is slow. I missed the May Grubex. Gonna try and get it on this weekend(mid June). But my big question is what do I need to do next. To kill most of the “other” plants in my yard, and prepare for a seeding(which kind should I get, mostly sunny, Grand Rapids, MI) in the fall.

    Thanks

  18. Ed C permalink

    When i put down my Grub ex in May, i still found plenty of grubs. Does that mean my application last year didnt work? How do i prevent the grubs from turning into beetles. The japanese beetles are destroying my Linden Tree.

  19. Jon permalink

    I live in Southwestern PA. Do not have obvious grub or mole problem. Have not treated lawn for 3 years with Grubex.

    Should I apply Grubex now or wait until next spring??

  20. Ed C permalink

    Thanks for your reply to my previous questions! A couple of follow-up questions – Is it OK to spread Grub-Ex through perennial beds? while planting or transplanting, i have seen adult grubs in my perennial beds.

    And, is there any harm/benefit in apply grub-ex twice in one season, say once in early May, and then again in early July? I have very sandy soil, and i wonder how much of my product just goes straight through after watering.

  21. Shannon permalink

    any idea if this will help with voles; my dog brought one to the door and i think this is what is killing my vegetable garden; Although I know voles only eat plants

  22. Giovanna permalink

    I didn’t apply GrubEx last year and this year an area of grass is so damaged that I want to tear out any remaining grass and lay down a better base of topsoil and new sod, should I apply another round of GrubEx to this area before the sod goes down? I know grubs emerge in Spring but wonder if it would still be beneficial now. I want to lay the new sod here in Michigan by mid October, thanks

  23. Chas permalink

    OK, it’s mid-late Sept. in Virginia (DC area). The turf is coming off like carpet. Bare dirt everywhere. Obvious grubs, some live, some dead. What do I do? (Yes, I know, apply grub control in May…that’s months away!) Kill the live grubs now? With what? Seed? When? Fertilize? No pets or kids. Thanks.

  24. John permalink

    Just had lawn aerated, seeded, and fertilized. Lawn care service noted a grub problem and offered treatment now as well as a program starting next year. Should I go ahead and treat now or wait until the Spring/May of 2014? I live in NC so we are around mid 50’s to 60 in the evenings and mid 70’s in the afternoons. In short, any advantage to doing treatment now?

  25. Linda permalink

    My lawn was a mess and trying to bring it back the last couple years. Using Weed and Feed, additional hand sprayer for weeds, and hand pulled 4 bags of crab grass. Im winning the battle with crab grass and dandelions:) Now working on the bare spots with seeding and trying to avoid not know what I needed to do.

    I understand most everything you have said. You mentioned if May was in the review mirror, apply Grubex by late summer. Well, there are no dates when the questions were presented. As I write this, we are approaching October 2013. I just did Weed and Feed last week. Should I use Grubex now as well. I hear what you are saying about their life cycle. Grubex is expensive. Would there be any benefits to apply Grubex in Oct or should I just wait and do in May? How many times a year do you use Grubex? Linda in Souderton Pa

  26. Linda permalink

    Your info on seeding and Weed & Feed timing is something I didnt take into account and I might have been my own worst enemy with some of the bare spots. Thanks so much for the info and speedy reply. I copied this whole thread.

  27. Mary permalink

    It’s the first part of October and the moles have appeared. With it being so late can I still put Grubx down or is it just too late?

  28. Barbara permalink

    I just discovered I have grubs…it’s October and a section of my lawn has been invaded by critters ( skunks?) since the lawn looks as if it was thatched. Can I apply grubs now..October? Help

  29. Dick Roeber permalink

    We had grubs last year, and GrubEx seems to have cured the problem.We have power rakes, fertilized and done our first mowing this spring. The sprinkler system is on, and We expect to aireate next week. Would you apply GrubEx before or after aireating?

  30. chris m permalink

    Just put down Step 1 last week before a good soaking rain in Massachusetts. How long should I wait before putting down my Grub X?

  31. Irene M permalink

    Just had Grubex put down today. It is going to rain in two days. Is that okay or should I water sooner?

  32. ian permalink

    How long after i apply Grubex can i go back and rake up all the dead grass?

  33. Susan doucette permalink

    How often can I put down grub ex?

  34. Renee permalink

    Can I apply grub ex and summer guard at the same time? During the same application?? Thank u in advance

  35. Linda Williams permalink

    Is it safe to eat tart cherries from a cherry tree that had Grubex applied on the lawn around it?

  36. Steve Taylor permalink

    I applied GrubEx in April but with this crazy weather (Midwest) is it best/safe to apply a 2nd application?

  37. Jim Gibbons permalink

    Hi Ashton,

    Reading the label on Grubex … it stated apply spring to early summer. I’m here in NC (where spring starts in March) and applied my Grubex in Late March. Was this too early ? Should I apply again in May ? thx Jim

  38. Jerry permalink

    Is it too early to use GrubEX effectively in Tamps, Fl.

  39. marcomtrujillo permalink

    I just reseed my lawn last week. Can I use the crabgrass stopper now or should I wait until the seeds germinate??

  40. Ebony permalink

    I applied grubex last June after my neighbor informed me that I had grubs(I’m a new homeowner), not sure if it did any good by then. I recently applied more grubex to my lawn. How long should I wait to put grass seeds down?

  41. Anthony permalink

    can I put down grub ex right after I have over seeded the lawn and fixed the patches where the grubs have damaged the previous year

  42. Heather permalink

    Hi Ashton,

    Can I put down grubb x and then spray Scott’s weed and feed? The hose version. So I will be wetting the grass for the grubb x and also killing weeds!
    Thank you,
    Heathet

  43. Adam F permalink

    Hi,

    I inherited a lawn that was old and worn out with lots of brown patches. I planted seeds in late April and put down Scotts starter food with weed control. I got some germination, but not a lot (don’t think I watered enough and it did not rain for 2-3 weeks). I just put down more seeds and this time with hay over it and now have sprinklers on timer. I was planning to put down grubex this week and more starter food in two weeks. However, I just noticed a good amount of a wheat like weed (annual bluegrass, Poa annua?). Any suggestions?

  44. Lou permalink

    I have an older Scotts Easy Green spreader. I called Scott’s for the setting for GrubEx and was told 21 or 22. I set it on 22. My lawn area is over 20,000 sq.ft. A 10,000 sq.ft. bag covered the area. I know I didn’t put enough down. Can I give it another application now? My last application was on June 3,2015.Thank you.

  45. deborah clark permalink

    I’m finding your website very helpful. However, I live in Spokane WA. Different climate from your other Q/As. Moved to this new location where earthworm berms are an issue. I keep hearing that earthworms are good to “break-up” the soil, yet, every year our soil becomes more like cement!

    Any ideas? Thanks.

  46. Eric permalink

    I just discovered grubs now in my lawn. It’s early oct. and as I peel back grass the grubs look to be about 3/4 in. in size and curled up dormant. Is it too late to apply grubex now or should I just seed the areas and wait till next spring to apply?

  47. susan leonard permalink

    Hi, Ashton…thanks for the helpful info. I live in Dallas and have had an awful time getting liriope (“Big Blue”) to survive. It’s in my front yard, which is mostly shady from large red oak trees. Some of the plants do great, but many turn yellow/brown from the bottom and then eventually brown all over and die. My gardening person has re-planted the areas at least 3 times now. She is at a loss to know what the problem is (and everyone I know who has liriope says they’ve never had a problem with it).

    I know she checked for grubs a couple of times and found a few. (I’m not sure what treatment; once was in March and another time in August). If I treat with GrubEx in May, how long should I wait to try again to replant? And would it be best to lightly till the soil in preparation for replanting and treat before or after adding some organic matter?

  48. Pat Rouse permalink

    Today, March 14, I pulled back a spot maybe 4′ square, found grubs, beetles(which I thought were lady bugs) worms. Can I treat the soil, then top off with new soil and seed?

    Thanks

  49. Jo-Ann Iannotti permalink

    Hello,

    My name is Jo-Ann.I live in Webster, Massachusetts , 01570 .I had beautiful lawn last year, I planted 3 years ago..I noticed I had grubs and moles ..I know I need to put my grub control down in April…Can you give me a list of what I need to do in all 4 seasons..I go to Home Depot and I get conflicting advice..thank-you

    Jo-Ann

  50. John permalink

    It is March 29th, and the “guy” at the hardware is telling me that I need to put the weed and feed, and the GrubX down now….is it too early, and if it is, why?

  51. Chuck permalink

    I have an ant problem and bought triazicide insect killer for lawns. Can I apply it beginning of April and kill the grubs also. Then I want to put down the crabgrass preventer and overseed my lawn. When is a good time to spread these items?

  52. Dave permalink

    Today I put down Turf Builder with crabgrass preventer. I also bought the GrubEx, it says to put down spring to early summer.

    -Do I need to wait a certain amount of timeto put down GrubEx?
    -Or will next weekend be ok?
    -My yard also has a swail in back and side, should I avoid those areas since it stays pretty wet or does that not matter?

  53. Bill permalink

    Hi Dave, I was just wondering if you had any experience with voles?

  54. Donna permalink

    How soon can I put weed&feed on lawn after I’ve used Grub control??Thanks!!

  55. Michelle permalink

    I’m planning a veggie garden and want to get rid of grubs now, so the skunks will stay away. I just applied grubex this morning, then learned that it won’t kill the grubs here now. Can I apply an instant grub killer, such as the Bayer 24 hr, on top of the grubex? We’re expecting rain in the next few days, and I’d like to take advantage of it!

  56. David permalink

    Hi, I am wondering what the timeframe should be between products, or if I can put down any of these together in the same day.

    Grubex

    Bug be gone
    Weed and feed
    Crabgrass preventer

    Thanks!

  57. Richard permalink

    Can I put Scott’s GrubEx down with Scott’s Bermuda grass seed at the same time?

  58. Jennifer Williams permalink

    Question for you (and I know this thread was from years ago…) I purchased the GrubEx that is the “Season Long up to four months apply spring to early summer.” No where on it does it say not to use on vegetables it only says “residential lawn use only” (which leads me to think that they mean not intended for commercial use.) I have put this on my vegetable garden… how can I know if it is safe??

  59. Chad Kelahan permalink

    Having a hard time determining the difference between Scotts GrubEx and Scotts Summerguard. GrubEx is usually applied in the Spring and Summerguard is applied about mid summer. Do they do different things? How do you determine which to apply?

    Also having a hard time determining the difference between the Scotts ‘regular’ Turf Builder Lawn Food and the Scotts GreenMax Lawn Food. Do they do different things? How do you determine which to apply?

  60. Chad Kelahan permalink

    Thank you for this information, understood all. Excellent site you have here.

  61. PATRICIA WESLEY-GRIFFIN permalink

    We had grub worm infestation last year resulting in our lawn being dug up and flowers uprooted. Disaster. I applied GuideEX in March and saw about 3 brown grass patches a couple weeks ago. So I applied GrubEx last week and watered kit down real good. QUESTION: here it is a week later and the locusts have arrived…singing loud all over the neighborhood. Will my GrubEx application kill the eggs they lay or did I apply GrubEx too early?

  62. ray permalink

    grubs are killing my gladiolas and lawn,live in michigan,should i put down grub control now, killed a couple today 2 inches long

  63. Mwalsh permalink

    Can I put grub ex & crab grass killer down at same time?

  64. Tony permalink

    I dropped Grub-X in June and now notice brown patches which appear to be grubs. Should I drop another bag now (late-August) or is it too late?

  65. I put down Grubx and it rained do I need to reapply?

  66. Donna mcmann permalink

    Is may easy enough if u have had moles all winter and forgot to put grub X down last fall?

  67. YeOldeLawnGuy permalink

    Maybe May is good where you live… how about those of us that still have some snow in May?

  68. Nancy permalink

    How long after applying a weed-n-feed should I wait to apply GrubEx?

  69. Audrey Orozco permalink

    I live in San Antonio, TX and I’m writing on August 6, 2017. I’ve discovered I have a bad case of grub worms, so when should I apply the GrubEx? Our temperature has been in the upper 90°F to 105°F for several weeks already with several more weeks ahead. Do I apply the GrubEx now or wait until May? Thank you.

  70. Karen permalink

    Hi Ashton, Great blog! I live in Massachusetts and have just yesterday (8/8) applied GrubEx. Am I too late? Thank you.

  71. Karen permalink

    Thank you–I am so grateful for your knowledge and advice.

  72. Anna permalink

    I have applied GrubEx to my Lawn yesterday and watered it using my sprinkler system for 2 hours. I see the the grubEx still on my lawn , it has not gone down the soil. Is this because I didn’t irrigate it well after applying? How long should I Irrigate after its applied?

    Also Is this the right time to apply Grube Ex. I had lots of Japanese beetles last year and I want to get rid of them this year. I hope Grub Ex will kill the larvae.

  73. Denise Waddell permalink

    My lawn guy didn’t come this week, wanna apply Grubex now cause rain is coming. Should I wait for him to mow first, before applying Grubex ??

  74. Ann permalink

    Hi.

    I have applied Grubex on April and should i go for a second application of the same in fall. I have lots of beetles this year and they are now in the mating stage. Hope the grubbed I applied on aril will be effective on the eggs they lay. But should I still apply again?

    Thanks

    Ann

  75. Dave permalink

    I applied Grubex in May how long do I have to wait to reapply again for a second treatment

  76. Mary permalink

    Can I put the Summerguard after I applied the Grubex and watered? Do I have to water often when the weather is hot and dry??

  77. Anthony Sapienza permalink

    Hi . Located in upstate NW NYState..

    I applied grub prevention this past Spring. It is late November, we have had snow already, but we’re having some 40+ degree days. Can I apply grub x now? Thx

  78. Denny waganan permalink

    I over seeded my lawn two weeks ago. It’s April 18th. The lawn can’t be mowed for another 2 weeks. When should I put the grub ex down

  79. RichBlanc permalink

    I did not realize I should apply grubex on a dry lawn. Now that I did thinking it would activate quicker will it still work?

  80. Sara Mcauliff permalink

    Thanks

    I put down grub x every year in may.
    My lawn looks great. Now all my neighbors ask me for advice.
    This product does exactly what you want it to do. I also apply weed and feed at the same time. Grub x does not contaminate the fertilizer.

  81. John Gonsalves permalink

    Is it late to apply grub x in late June

  82. Kyana permalink

    Can I spread Grubex on wet grass?

    We have been getting a lot of rain and will be getting more. My lawn isn’t dry, can I still spread it while the grass is wet and let the rain that’s coming water it?

You are viewing this post: When Do You Put Down GrubEx?. Information curated and compiled by Kayaknv.com along with other related topics.

Previous articleDive into anything
Next articleAmazon.com
I'm a writer who focuses on the outdoors and travel. I share my time between Alaska and Colorado, where, when I'm not writing, I enjoy camping, kayaking, hiking, fishing, and skiing (often with dogs in tow). My byline may also be seen in publications such as The New York Times, National Geographic, The Washington Post, The Guardian, Condé Nast Traveler, Travel + Leisure, and others.

LEAVE A REPLY

Please enter your comment!
Please enter your name here