River Birches Home › Forums › Tree & Shrub Questions › Tree & Shrub Questions › River Birches Tagged: birch trees, soil test This topic contains 1 reply, has 2 voices, and was last updated by Anonymous 6 years, 10 months ago. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts July 13, 2010 at 4:44 pm #29067 Anonymous We have six River Birches in two clumps. They are surrounded by ground cover. They shed yellow leaves all summer. Are they not getting enough water? July 18, 2010 at 2:08 am #29542 Anonymous Sounds like it might be Iron chlorosis wich is caused by soil that is too alkaline. Have you ever done a pH test on the soil? Check out this USDA publication on growing birch trees. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic.