Grubworms. Many grub worms are beneficial. For this reason insecticides are less effective. Many homeowners simply treat their lawn with a chemical grub control product or grub killer once or twice a year. They are the larval form of the adult japanese beetle sometimes called the june beetle.
Grub worms eat the roots of turf grass and ornamental plants. Only about 10 of the grubs in the soil are plant root eaters. The grub worms found in the lawns and gardens of north america are the larvae of billbugs and multifarious scarab beetle species. They typically range from to 1 inches and have gray or white bodies with brownish heads.
The rest are feeding on dead and decaying organic matter and aerating the soil as they travel. Grub worms are one of many common garden pests that can wreak havoc on your lawn and plants. Grub worms are beetle larvae. They have six legs and a dark tinted abdomen due to soil particles showing through their exoskeleton.
Grub worms also called masked chafers can be found in the soil and damaging lawns by feeding on grass roots. Grub worms also called lawn grubs are white worm like pests that live in the soil. The best time for treating grub worms is in late summer or early fall while the grub worms are still small and close to the surface. The grubs that are as large as your thumb are the beneficial and interesting rhinoceros beetles.
Each larva is about inch long with a small brown head. Grub worms are less susceptible to treatment in the spring as they are too large and no longer feeding. The grub worm is not exactly a worm like your friend the earthworm. Grub worms range from a quarter inch to two inches in length and are easy to identify with their cream colored bodies.
Grub worms are japanese beetle larvae or the babies of those beetles.