How To Grow A Hydrangea Tree (Hydrangea Paniculata): All You Need To Know

Lean Pruning Tips Proper pruning is key to maintaining a healthy hydrangea tree. For best results, follow these pruning tips: Trim your tree during late winter or early spring, before the new growth begins. Thinning out the shrub to five to ten main stems will produce larger flower clusters. If you want your tree to have a single trunk, choose a main stem and attach it to a sturdy stake. Remove any competing ground stems and buds protruding from the main stem. This will help the trunk grow taller and look more tree-like.