White grubs typically mature into adult insects such as the Japanese Beetle, May/June beetles, or a variety of chafers. In their larval (grub) stage, they act as detritivores but pose a threat to lawns and gardens by consuming plant roots. Adult beetles exhibit a broad diet, feeding on a variety of plant species, including roses, ornamental plants, deciduous fruit trees, vegetables, grasses, and weeds.
These beetles have the ability to overwinter in the grub stage, becoming active feeders on roots with the onset of spring temperatures. While they don't transmit diseases, the damage inflicted can weaken plants, making them more susceptible to infections. Additionally, grubs may draw soil-dwelling rodents, contributing to mole-related issues. If you're dealing with a mole problem, it's likely that the presence of grubs is a contributing factor.
Use general predators to monitor and detect infestations early. When using beneficial insects for natural organic pest control it is a good practice to be preventative.