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.
Download our spring checklist to prepare your trees and landscape for a healthy growing season.
White, tan, or rust colored resin flowing on the trunks of austrian, scots and red pines could indicate an infestation of Zimmerman Pine Moth (ZPM) caterpillars.
Oaks are the primary hosts of the twolined chestnut borer. Some of the more frequently attacked species include red, white, and bur oak, scarlet, pin, and black oak, chestnut, post and live oak.
Two-spotted spider mites are difficult to control. They’re a pest to more than 150 different plant species. You can avoid spider mite encounters with these tips from your local, licensed Davey tree service professional.
You want the best for your trees, and that includes making sure they are healthy. Here’s a great way to determine trees’ inner beauty.
Trees in decline have an unhealthy look. Often, leaves are fewer than normal and overall growth has been poor all season.
As spraying large trees has become more difficult and controversial, new treatment methods have been investigated.
Scale insects are small, highly modified animals that have little resemblance to most insects. Because of their small size and often cryptic appearance, large numbers may be present without being noticed.
Scab and rust diseases are caused by fungi that invade crabapple, apple, hawthorn, common pear, and other ornamental plants in the rose family.
Oak Wilt is a serious disease of oak trees. red oaks are much more susceptible than white and bur oaks.