My husband and I purchased our home in Lansdowne a couple of years ago.  We were fortunate that the previous owners created and maintained a lovely yard - lots of trees, shrubs, etc.  Alas, we have tried to maintain, but I am noticing that some things are looking overgrown, and I do not know when the items can be pruned (or how to prune "safely" without permanently killing the greenery).  Does anyone have a landscaper to recommend, or perhaps a master gardener who can come over and provide advice and/or labor?  Thank you.