Mugo Pine Q.trimming Mugo Pines Zone Salmon Arm B. C. | franjoy added on July 27, 2017 | Answered WHEN IS THE RIGHT TIME TO TRIM AND SHAPE MUGO PINE TO KEEP THEEM FROM BECOMING TO BIG A.Answers to this queston: Add AnswerDowntoearthdigsAnswered on July 28, 2017This article will help you. http://www.yourgardensanctuary.com/mugo-pine-care/ Was this answer useful?00 Log in or sign up to help answer this question. Printer Friendly Version Did you find this helpful? Share it with your friends! FacebookTweetPinEmail You must be logged into your account to answer a question. If you don't have an account sign up for an account now.