Lawn grubs are actually larvae of other insects. They look like little worms and are in between egg to becoming full grown adults. The problem with lawn grubs is that as adults they will go back to the same place to lay their eggs. And once the eggs are laid, you can’t kill them without tilling up your lawn. Once the eggs hatch they eat the grass roots as they grow becoming adults. Eating the grass roots of course kills off the grass, but most often, you don’t even know you have lawn grubs until it is too late and several patches of grass are already gone. Since the grubs have eaten the roots, the grass will not come back unless more is planted. It is best to just wait for late spring or early summer, apply pesticide, dethatch your lawn and wait until fall to plant more grass seed (the grass see will not grow with pesticides).
The Best Time For Grub Control
Grubs are beetle larve. They have to be taken care of when they’re young or they are next to impossible to get rid of. Beetles lay their eggs deep in the top layer of the soil in the lawn where there is plentiful access to grass roots and other good food for the growing larvae. During the late spring and summer is the when the larvae are actively growing. Their eggs have already hatched and they have come up closer to the top of the soil where pesticides can actually reach them.
It is best to use a long lasting pesticide. The beetles will go back to your lawn in the fall to lay their eggs. If there pesticide is still active it is possible to get these beetles at this time, and if you don’t get them, at least their eggs will have no chance. If you are adverse to using pesticides or are concerned about pets and/or children you can look into using nematodes. It is more natural, but may require more applications.