White Grub

WHITE GRUB (Phyllophaga sp. Rhizatrogus majalis)

 

 

WHAT ARE WHITE GRUBS?

white grub larvaeWhite grubs can devastate your lawn. White grubs (European chafer, Japanese, May and June Beetles) are small plump white larvae which actively feed on grass roots. They live below the soil surface and actually chew off the roots of the grass plants. They are C shaped, have a brown head and have 3 large pairs of legs.

After they destroy the grass roots, the lawn will appear unhealthy, weak or possibly yellow in patches, as if the lawn is drying out. Other symptoms to watch for include; animals like skunks and raccoons digging up the lawn and birds feeding on grubs leaving pencil sized holes. Often the damaged turf will roll back like a carpet as the root system has been eaten away.

LIFE CYCLE OF THE WHITE GRUB

white life cyclewhite grub lawn damageSome grubs complete their life cycle in one year and others require three years to complete their life cycle. White grubs survive in the winter as larvae in the soil. In the early spring they begin to feed again. Later in the spring and summer they enter a resting stage (pupae) then hatch into adult beetles. A lot of beetles can mean a grub problem later as there will be higher populations to reproduce. (The beetles do not damage lawns.) Beetles lay their eggs which hatch into grub larvae. The larvae feed voraciously which results in significant stress to your lawn. Serious damage can occur in spring, summer and fall. If the problem is ignored the patches will get larger. Left undiagnosed grubs can devastate a lawn in a short period of time.

HOW CAN I TREAT FOR WHITE GRUBS?

white grub damage treatmentPromptly treating potentially devastating white grub infestations can help protect the investment you have made in a lawn care program and your property. If you notice suspicious brown patches starting to appear in the lawn, DO NOT HESITATE! Call your local CodyMobile Lawn and Garden Care Professional for a free healthy lawn analysis. Weed Man can verify the presence of a potentially devastating infestation; discuss preventative measures and recommend treatment if required. Treatment is usually not required until the white grub population exceeds 4-6 per ft². At this level the white grubs are feeding on the roots faster than they are able to regenerate. Consult with you local CodyMobile Professional to discuss all options with respect to dealing with insects in your lawn.

 
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