Question: Last season, leaves on some of my rhododendrons show notching that may be due to root weevils.   What stage of growth are weevils at now and what is effective treatment for this stage? Answer: Katherine Garland, Horticulturist Our entomologist shared that it’s either the Black Vine Weevil or the Raspberry Weevil doing the damage. read more What are some effective treatments for weevils?