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.
Follow our winter checklist to keep your trees and landscape healthy by identifying potential issues.
Caterpillars feed on the leaves of oak trees and other species. Found on the Pacific coast.
Causes severe damage to forests and landscape pines, discoloring needles and eventually defoliation.
This disease causes holes in the leaves which start as brownish spots them dry and fall out.
The Cytospora canker is caused by a fungus that primarily attacks trees that have been weakened by drought, low fertility, mechanical injury, insect feeding or poor soil conditions.
The southern pine beetle is one of the most destructive insects to pine in the South and Southeast with the ability to rapidly kill large trees.