A question for Dan Gill: I planted a D.D. Blanchard magnolia in 2016. I was told to wait until early spring of 2018 and then to prune vigorously to encourage the tree to become fuller. Another ...

Some varieties are also prone to bleeding when cut, which is why it's important to prune your magnolia tree during the correct time of year. The main reason you might need to prune your tree is size.