Raising a Clump River BIrch - Knowledgebase Question

Elburn, Il
Question by gagne5
April 3, 2008
I have never planted a tree before, my last homes had mature landscaping. I planted a Clump River Birch less than a year ago (6/07) and have no idea how or when to prune the branches. Is there a golden rule for all tree pruning? Help* I will be planting several more trees this spring and I do not want to harm them. Thank you*

Karen G.

Answer from NGA
April 3, 2008


River birches should be pruned in the spring, after they have fully leafed out. If you prune in the winter while they are still dormant they will ooze sap in early spring, which will attract insects. Wait until the leaves are out, then prune out anything that is mis-placed or damaged, including crossing/rubbing branches or side shoots that might be starting to compete with the leaders. The growth habit of clumping river birches is to send out branches near the bottom of the trunk and shoots from the roots (that's how they clump and colonize an area). I'd just allow them to grow at will, removing only damaged or crossing, rubbing, broken branches.

Best wishes with your new trees!

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