Most shrubs are trimmed following their annual flush of growth. We've had success severely cutting back Yews and Rhododendrons, among others, during this early season time frame.
Trimmers work best if they are kept sharpened and properly adjusted for clean cuts.
If you suspect you have trimmed a diseased plant, sterilize your trimmers with rubbing alcohol. This helps keep pines compact and well shaped. Recommendations on this website apply mostly to S.W. Pennsylvania We have attempted to present accurate and current information. However, Donnan Landscape Services is not responsible for any errors or omissions.