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Turfgrass and Insects

B. McDaniel photo

May/June beetles

The earliest symptom of white grubs feeding on turfgrass roots is a gradual thinning and weakening of the stand. Damage may progress from sudden wilting of the grass, even with adequate moisture, to small patches of dead grass that easily peels back. These beetles have a three-year life cycle. Adult beetles can be damaging to trees and ornamentals. White grubs should be treated during late July to early August to control any newly hatched larvae. However, during the second year of the grub's life cycle, treatments can be made from April through September.
 

 

Wild thing
 

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IPM1020 Turfgrass and Insects | Page 22 | University of Missouri Extension