How should I properly prune a magnolia bush to ensure its health and promote optimal growth?

To properly prune a magnolia bush, start by removing dead or damaged branches. Then, trim back any crossing or crowded branches to improve air circulation. Make clean cuts at a 45-degree angle just above a bud or branch junction. Avoid cutting too much at once and aim to maintain the natural shape of the bush. Pruning in late winter or early spring before new growth appears is best for magnolias.