Abstract: A protective cover for surrounding and protecting a container of substances for treatment of wood perennial plants, such as trees and the like, having a main body of flexible plastic material with a top and a continuous peripheral wall extending downwardly therefrom to a bottom tree contact edge to define a chamber for receiving said container. A plurality of integral securement tabs extend outward from opposing side walls of the cover so that special screws can be inserted therethrough to firmly secure the housing to the associated tree. The tabs can be reversely folded and anchored to securely cover and protect the attachment screws.