With evergreen Magnolia Trees, you only have to worry about retaining a triangular shape.

May 20, When a magnolia is pruned it loses its naturally rounded shape. Where the stems are cut the plant sends up vertical growth.

An arborist can safely treat any extensive issues that might be affecting the tree.

This strong new growth would quickly block out the view with dense branches. As well, in winter when the tree is bare, the ugly cut branches would be in clear sight, spoiling the view of the sea treedelimbing.barted Reading Time: 4 mins. Mar 15, Pruning your Magnolia Tree too much can cause unnecessary stress, and it may start to appear weak and leggy with not enough leaves and flowers to show. Be careful not to prune this plant in late winter or early spring because that is when the branches and stems will ooze sap fluid, which can attract a host of pests and insects.