Grub activity is increasing along the Front Range. We are seeing established infestations in parts of Greeley, Johnstown, Windsor and Fort Collins. Grubs cause damage from late spring through the end of the growing season depending on which type. Grubs eat the roots of your grass off, causing damage. If you can pull on your grass and it pulls back easily with the roots unattached you might have grubs.

Grubs also attract raccoons, skunks and even birds dig up the grass to feed on them. Animals can cause even more damage than the actual grubs! If you see holes like something has been digging in your lawn, peel back the grass near the damaged areas. It usually pulls back far too easily because the grubs have been eating off the roots and just pulling with your hands can pull back a section of grass to look for grubs. If grubs are discovered in your lawn, an insecticide will need to be applied to control them.  

We see discussions on neighborhood social media groups about a brown spot in someone’s lawn and by just looking at a photo, people will first recommend insecticides for grubs, mites and other lawn damaging insects. Insects need to be found and present to apply insecticides.  We value stewardship and sustainability and applying pesticides willy nilly without a proper diagnosis is irresponsible. Often times it is an irrigation coverage issue. See this helpful document from CSU about Brown Spot Diagnosis before applying fungicides or pesticides.

Please leave such applications to professionals since proper identification of the grub, which product to use, timing and proper application methods are important to get control. If Japanese Beetles are discovered in your area or lawn – here is a specific post about ways to make your yard less appealing to them. Small changes can have big impacts!

Grubs Lawn Care EcoTurf

Grub signs near edge of turf in Windsor. Grass easily pulls back by hand near areas torn up by animals searching for them to eat and grubs were found as well!
Small grubs – early in life stage found in section from above photo. This is at Main Park Windsor, Colorado
1st or 2nd larval instar stage
Larger grub in same area as the newly hatched grubs.
EcoTurf of Northern Colorado

1101 Automation Drive #664
Windsor, CO 80550

Servicing Northern Colorado including Fort Collins, Loveland, Greeley, Windsor, Eaton, Evans, Johnstown, Severance, Timnath.