Answer: I checked with the University of Florida Extension service and they have several publications on Grubs and Grub control so I do think that they can cause problems in Northeast Florida and in St. Augustine lawns. Grubs feed near the soil surface from August through October but go deep into the soil the other months of the year. Grubs feed on grass roots until the grass dries out and dies. Alhtough turf can survive some feeding, when grub populations are large, the turf can easily be pulled back like a carpet. Turf should be scouted for grubs in early August. Peel back the grass. Just a couple grubs per square foot are not a problem to an otherwise healthy lawn. Ten or more per square foot are necessary to justify treatment. Bayer Advanced 24-Hour Grub Control is effective in controling grubs. Be sure to apply according to label directions.
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