Resource of the Week: Grub Control From MSU
Terry Davis from Michigan State University studies grubs for a living. I’ve dug in the dirt with him looking for the little white larvae. He gets real excited when he finds them. I’ve never shared his enthusiasm.
What I took away from my grub-digging sessions at MSU was a surprise at how prolific grubs could be, how much damage they could do, and shock at how confusing grub control can be.
I have to admit, I never committed the details of grub-control to long-term memory. I’m not sure why- its’ not terribly complicated. I can tell you all kinds of other facts (useful and not) stored in the hard-drive of my brain. But the lack of enthusiasm I had digging with Terry those many years ago seems to have had a residual effect on my enthusiasm of committing this stuff to memory. No worries though. I simply bookmark the link above and reread Terry’s advice every spring.
Four Reasons to Read
So as I pull up this site to remember how to treat (and not to treat) for grubs, I invite you to do so with me. Here’s a few reasons why:
- Preventative vs Curative treatments: Different goals and different timings. Know what you want to accomplish and apply the right amount of material at the right time.
- Active Ingredients: This is crazy, but there are actually products on the market labeled for grubs that will not control grubs. They would kill the grubs if they every made contact with them, but get bound up in the thatch layer of the turf and never move through the soil enough to establish control. Know your active ingredients.
- Understanding Thresholds: You don’t have to apply an insecticide just because you saw a grub. Know your thresholds and when you should apply.
- Application Specifics: Know when to apply the material, how to water it in, and how to restore the turf lost from grub damage
Here’s to hoping you don’t have grub damage this spring. If you do, here’s your help.