If your lawn has large dead patches, check to be sure that the damage has not been caused by grubs. This is easily done by pulling up handfuls of dead turf. If the turf comes up like a carpet, then you have grubs. Treatments this late in the season are best done with trichlorfon (Dylox, Bayer 24-hr Grub Control). Products that contain imidacloprid (Bayer’s Season-Long Grub Control and Grub-Ex) and halofenozide (Kill-a-Grub) are better applied earlier in the season as grub preventers. It is important that this product be watered in immediately after application. Waiting as little as 24 hours can reduce effectiveness to the point that grubs are not controlled. Apply 1/4 inch of water to insure the insecticide reaches the grubs.
Articles reprinted from the K-State Research & Extension Horticulture Newsletter
Tags: Grub Damage, Grubs, Lawn Care, Turf, Turf Management
