Lawn Grub Guide

 Every thing I need to know about grub control on one page.

There are two types of grub control:  A preventive and a corrective.  Lets talk about each.

Preventive Grub Control:  The life cycle of grubs centers around June.  This is the time that grubs change into beetles and emerge from the ground.  They feed on your roses or your fruit trees and then deposit their eggs into the lawn.  These eggs hatch in June, July and begin eating your roots.  In September and October, major lawn damage can occur.  These grubs then overwinter and resume eating in the early spring, waiting for that moment in June when the life cycle begins all over again.

The moment to interrupt the life cycle is when they are newly emerged and begin feeding. They eat the insecticide and starve to death. They are only susceptible to this when they are newly hatched, so you have to get the preventive insecticide into the ground before that June/July hatching.  That means an application in late April or early May.  These preventives last 3 months, so it will cover May, June, July.  If the newly hatched bugs die in June, they won't grow into grubs in September, and they won't overwinter to show up as alarmingly big grubs in the spring.

• To Summarize:  the yearly grub program is to put down pre-emergent grub control in late April, early May.  
• Preventive/ pre-emergent grub control is BioAdvanced Season Long grub control. Look for Imidacloprid.  
• Another preventive is Scott's GrubEx, Chlorantraniliprole
• Put one application of this down in May and it will interrupt the life cycle for an entire year.

 

Corrective Grub Control:

You need corrective grub control when you have an infestation of grubs that are killing off large patches of your lawn.  If you can peel back your turf like a carpet and discover grubs, this is when you need a corrective and can't wait for the preventive to work next year.  This is typically in the Fall, October, November.

For Corrective grub control, look for bags that say Grub Killer, or 24 hour grub killer, or kills on contact.