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.
They’re called plant lice for a reason. Although aphids are fragile insects, they are not harmless, and can damage your trees and landscape plants. Follow our advice to help your most valuable natural assets survive the summer months.
Borer larvae feed underneath the bark, creating multiple tunnels that cut through the water-transporting layers of wood, interfering with the water supply to branches and needles.
The hemlock woolly adelgid is a serious pest of Canadian hemlock in the eastern United States and of western hemlock used as an ornamental in the Pacific Northwest.
We've discovered a new way to detect EAB during the first year (a year earlier than previously).
Mites are nearly invisible, but they can cause destruction that will surely be noticed on a variety of indoor and outdoor trees, shrubs and plants.
If infestations continue, spruce spider mites may kill tree branches and possibly lead to tree death. Save your trees from these pests with the following tips.
Caused by a water mold known as Phytophthora ramorum, Sudden Oak Death can have a fatal effect on numerous types of trees.
This species is an armored scale with a hard, waxy covering. It damages hemlock needles by inserting needle-like mouth parts into leaf tissue and removing cell fluid.
In this episode of Talking Trees, Davey Expert and ISA Certified Arborist Jim Houston discusses Diplodia Tip Blight and ways to prevent damage to your pine trees.