Our arborist advice section is the most extensive expert collection of tree, lawn and landscape care tips and educational resources that you will find anywhere.
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The disease affects mostly non-native pines such as Austrian, Japanese black and Scotch. Diseased trees die in two waves.
Don’t be fooled by their pencil point size, these brown to black beetles are not trivial pests. A significant beetle attack can destroy a tree within a few weeks.
This disease commonly occurs on the southern landscape plant, red tip photinia. It also defoliates Indian hawthorn, loquat, flowering and fruiting pear, hawthorn and firethorn.
This disease of peach and nectarine leaves can infect your tree annually in the spring before or just after bud break.
Obscure scale is a serious pest of oaks, especially pin and willow, that causes trees to develop a sparse, unhealthy appearance with small, off-color leaves.
Oak wilt is an aggressive, tree-killing disease of oaks. It affects oaks in a manner similar to how dutch elm disease affects elms. The fungus enters the water-conducting vessels of the sapwood through fresh wounds or through roots connecting healthy and diseased trees.
There are many species of lace bugs, some infecting deciduous plants while others infect evergreens.
Don’t let their brown halo trace misguide you—Japanese beetles are no angels. They do have wings though, and can chew their way through your trees and landscape quickly. This summer, keep your trees and shrubs healthy with these tips from your local, licensed Davey tree service professional.
Classified as one of the most destructive insects in the United States, the gypsy moth partially or completely strips a host tree of its leaves.