Aphids, mites, scale and other insects can cause sever damage if not controlled. The best way to prevent damage is to periodically spray your trees and shrubs to reduce the population of these insect pests. Throughout the season, check for insect pests and treat as needed. Some plants require more frequent treatments like roses or a systemic can be used for season-long control. Other plants are relatively insect and disease free like dogwood trees. Therefore a careful examination of each plan is key to ensuring you are maintaining good control.
For regular maintenance we recommend spraying trees and shrubs four times a year starting with a dormant oil in early spring followed by a treatment every six to eight weeks. It is important that you know the insects you want to control in order that you use the right insecticide. For example, one product may control aphids but not mites. Remember to read the label to ensure you are using the right product at the right rate to control the insect pest.