What is a grub?
A typical lawn grub is a white ‘C’ shaped larva of a beetle about a half inch in length. A grub may bet he larvae of the masked chafer, European chafer, Japanese beetle, or other beetle species.
How do I know if I have grubs?
Gently lift up the sod, if it easily pulls away from the ground, the root system may have been eaten by grubs. Cut into the soil and look for their presence, more than ten per square foot of lawn could indicate a problem.
The presence of beetles may be an indication that they are laying eggs in your lawn. Tan colored chafer beetles are active just after sundown and Japanese beetles can be seen flying during the day feeding on ornamentals.
Grub damage can appear two ways. First small irregular patches of lawn will appear brown, dry and wilted. Damage also occurs when moles and crows tear up the lawn while feeding on the grubs. Both types of damage can be extensive in a severe outbreak.