Q.Weeping willow trunks
I have a 4 year old weeping willow that is growing healthy. However, it seems to have two large branches growing from one root. It looks like the root is going to grow two separate trunks.n I know that willows can grow quite large, so should I cut one of the branches? Will it affect the life or health of the one branch connected to the base of the tree?
Yes, you will want to have one central leader.
Pruning Willow needs to be done while the tree is dormant.
Here is an article that will help you.