when do you prune magnolia bushes?
Prune your magnolia right after it blooms. Some magnolias bloom in early spring, others in summer. Regardless of type, prune after the main flush of bloom. Some southern magnolia (Magnolia grandiflora) cultivars such as 'Little Gem' bloom all summer. Prune these early in the growing season. Late-summer, autumn, or winter pruning can result in few, if any, flowers the following year.