How to prune prunus 'spire'

After flowering in spring for light tidying; late summer to maintain narrow form; midsummer if silver leaf is present. In the first 2–3 years, remove badly placed or crossing shoots to establish a balanced upright framework. On mature trees, trim outward-arching branches in late summer to preserve the columnar silhouette.

Annually for young trees; lightly as needed on established trees. Prunus 'Spire' has a naturally narrow, columnar to vase-shaped habit that needs very little intervention. Light pruning in late summer can help maintain the slender upright form as the tree matures and fans slightly. Remove damaged or misplaced branches after flowering. Formative pruning in early years builds a clean framework.

In the first 2–3 years, remove badly placed or crossing shoots to establish a balanced upright framework. On mature trees, trim outward-arching branches in late summer to preserve the columnar silhouette.