How to Prune an Evergreen Boxwood Jun 12, 2017 | How To, Trees & Shrubs Here are a few tips on when and how to prune your Evergreen Boxwood. 1 Comment Amy on August 18, 2017 at 3:39 pm Thank you Amy for the awesome tip. We have boxwoods in front of our house and my husband usually goes to town on them with the electric one and the result IS not so good. (But don’t tell him that,..) So hand trimmers is the answer. Great! Would love to see more tips! Thanks!