Gardeners should inspect their shrubs' foliage and branches weekly for signs of insect infestations and treat any problems as soon as possible, according to New Mexico State University. Identify the insect and apply an insecticide suitable for use on that particular plant species and for the specific pest. Early treatment allows for easier insect control, less plant damage and using fewer pesticides.
About this Author
Joyce Starr is a freelance writer from Florida and owns a landscaping company and garden center. She has published articles about camping in Florida, lawncare, gardening and writes for a local gardening newsletter. She shares her love and knowledge of the outdoors and nature through her writing.