Answer: Clump River Birch has a narrow, oval to pyramidal crown when young, spreading wider with age as several branches become dominant. River birch can be easily trained with one central leader or as a multi-stemmed tree. You can prune or not, depending upon the look you want in your landscape and whether or not the branches are in the way. Branches droop particularly when they are wet, so you may need to prune regularly in the early years to remove lower branches when they are located close to areas where clearance is needed.
Best wishes with your landscape!
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