pruning a birch tree

Question

Is fall the best time to prune and my birch tree has three trunks. One is really leaning away from the others. Can I support this trunk and what is the best way.

Answer 1

The best time for pruning your tree would be late summer or early autumn. As for supporting the tree, your best help will come from a certified arborist in your area, or you may want to contact your local university extension service for some help with this:
https://www.gardeningknowhow.com/extension-search?zip=14094&radius=10&services_search_action=search&submit=Search

Here's an article that will help you with your pruning project:
https://www.gardeningknowhow.com/ornamental/trees/birch/cutting-back-birch-trees.htm