Insects like scale, adelgid, caterpillars, and beetles may be dealt with through cultural practices, beneficial insect releases, and insecticide treatments. Diseases such as phytophthora, leaf spot, cedar apple rust, scab, and needle cast can sometimes be tackled with cultural practices. More often than not fungicide applications are necessary in these situations.
Cultural practices are services typically involving infected material removal or structural pruning.
Having a licensed Arborist inspect your trees and shrubs regularly is a great way of preventing plant loss. Usually being proactive as opposed to reactive is the best strategy when maintaining our landscapes as opposed to reaching out when a tree or shrub starts to look sick!