::What's Happening to my Snowball Bush? and other Viburnums?!!::
The east coast of North America is particularly affected by the viburnum leaf beetle. Common names of pest stricken shrubs are Snowball bush, High bush cranberry, arrowwood viburnum, nannyberry, wayfaring tree. Here's a picture of the Larvae
And the Adult:
The good news is that the larvae pupate into adults within one season and the adults are killed by frost. But, if your shrub is attacked two or three years in a row it can kill the plant.
I NEVER recommend the use of pesticides for obvious reasons. Nature takes care of itself. Insects usually attack for only 3 years and by that time a natural predator will discover the abundant population and eat it's prey.
The idea is to keep the tree alive until that time.
A spray made of dish liquid spraying the leaves (both top and underneath), picking off the grubs by hand and spraying the ground around the shrub as well.
Patience is a virtue. No truer words can be written about gardening!