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.
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.
Reducing the tick population on the property surrounding your home is your best defense against tick-borne illnesses for you, your family and your pets.
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).
Are you worried the emerald ash borer is destroying your trees? Read more about the emerald ash borer and what solutions are available to combat this nasty beetle in our "Emerald Ash Borer Resource Center"!
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.