Hello. I am a newcomer and this is my first post. I recently purchased to "Betula Pendula Delecarlica " or European Birch trees. I am concerned about borers which I have read can be a problem with these trees. I have received mixed information regarding the planting them in full sun vs. partial shade. I would like to plant them in partial shade in an area that is moist (not soggy) in my landscape. My husband used Bayer Systemic Insectside to ward off possible borers. I live in zone 7 and I get strong afternoon sun in my back yard. The area I wish to plant them in is protected from the harsh sun. Any information would be much appreciated as I would like the site chosen to be their permanent home.