Non-flowering shrubs should be trimmed in the spring, according to Clemson Extension. Pruning in late fall or mid-winter may encourage new growth that can be injured by cold, the extension says.
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Aileen Clarkson has been an award-winning editor and reporter for more than 20 years, earning three awards from the Society of Professional Journalists. She has worked for several newspapers, including "The Washington Post" and "The Charlotte Observer." Clarkson earned a Bachelor of Arts in journalism from the University of Florida.