Grubs & Other Root Feeding Pests
Grubs and other root-feeding insects can cause poor seedling growth and even death. Diagnosing what is wrong requires pulling up the tree and examining the roots during the growing season.
CTN 8: Control of Root-Feeding Insects in Fraser Fir Christmas Trees – fact sheet on white grubs, black vine weevils, and root aphids
White Grubs in Turf – NC State Extension information on white grubs
Entomology Insect Notes: Black Vine Weevil – biology and control of black vine weevils