INSECT & DISEASE CONTROL: Insects & diseases pose two of the most serious threats to your tree's health. Insects can cause considerable damage to trees and shrubs by defoliating the plant and/or sucking out the sap, thereby weakening the plant, retarding it's growth, and sometimes killing it. Insects may also carry pathogens or provide an entryway for fungi, bacteria, or viruses. Diseases are often more damaging because they sometimes affect the water & nutrient conducting functions of the plant or cause rotting of the roots. Proper diagnosis and treatment of these problems is often difficult and should be left to qualified arborists. The arborists at Neal's Tree Experts Corp. are thoroughly trained in the diagnosis & treatment of these problems. Although we are certified and licensed to treat these problems through spraying and trunk injection methods, we are very environmentally conscientious and treat only when absolutely necessary. Neal's proscribes to a Plant Health Care concept of maintaining healthy plants through proper pruning, fertilizing, mulching, watering, etc. The less stress, the less chance of insect or disease damage. A happy plant is a healthy plant!