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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Causes severe damage to forests and landscape pines, discoloring needles and eventually defoliation.
A fungus that discolors spruce needles and causes premature drop, especially in overly wet conditions.
The tender leaves of a wide variety of tree species are food for these leaf-chewing caterpillars, with elm, oak, and apple being favorites.
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.
We've discovered a new way to detect EAB during the first year (a year earlier than previously).
Davey expert Jim Zwack discusses the emerald ash borer, from identification to flexible treatment options that are now available and may protect your ash trees.