what is the best time of the year to put down grub control fertilizer/killler for your lawn??

Question

Some people say not until mid may or early june.......most say do not do it in April.....any ideas????

Answer 1

Some people are right. Mid may through mid June will effectively control the newly hatched larvae. They are "more" susceptible to insecticides at this time. Putting down an application in April, just as a precautionary early coverage is ok too. You should do at least 2 applications between April and mid June. However, I notice that you may be using a fertilizer/grub-killer combo mix? It would probably do you good to separate these applications and do the normal spring fertilization by itself, without using the added grub killer. You can get "grub-x" at any garden center to do single applications. If for some reason you need to apply more grub killer, you won't be over fertilizing the lawn from the applications being too close together, which is not good for the turf. This way you can do one or the other, whenever the need arises. By applying grub killer in the aforementioned time frame, you will also be taking a few of the adults out as well. They move "closer" to the surface as the weather is warming up. Hope this answers your question. Good Luck!

$Billy Ray$

Answer 2

It depends on the active ingredient in the grub control, Imidichloprid will last all season long if used may-july typically, it depends on your climate. Dylox is usually used late summer early fall, this kills third instar (adult) grubs but it does not stay active very long. Both of these need watered in or they will not be as affective.

Answer 3

Traditionally the best time to control grubs is late summer, on their way down to their winter home under the sod. But late spring will work too, on their way back up to metamorphose into Japanese Beetles.