Mar 02, More drastically cutting back spirea should occur in the fall or in late winter to early spring. Remove any dead branches and use this trimming to shape the shrub. Cutting it way back will stimulate new growth in tighter clusters so that you can get a more rounded, compact shrub shape. Mar 30, The best time to prune spirea is after the first flowering.
For a spring-blooming cultivar, a good time will be in late spring. For a summer-blooming variety, this will be in mid-summer. During the spirea trim, cut the back the tips of the stems to the top of the leaf treemulch.buzzted Reading Time: 5 mins. May 07, 3. Prune spirea to get big flower clusters. Spirea that’s not pruned or pruned to the ground each spring has a casual, loose habit. In early spring, before the leaf buds start to swell, cut all of the stems down so they’re 4 to 6 in.
treemulch.buzz: Jim Childs. Oct 30, Dead, diseased, and broken branches should be removed at any time of the year but you should only prune healthy plant growth at the right time.
If you have Japanese or Bumald Spirea, prune them in early spring before the flowering season starts. Other varieties of Spirea should be pruned after the flowering has treemulch.buzz: 56K.
Don’t hesitate to give spireas a liberal pruning, if needed, to maintain their shape and to remove dead or broken branches. This is best done in late winter or early spring while your plants are dormant. Giving spireas another lighter pruning after they bloom in spring or early summer will promote new blooms and reinvigorate foliage growth.
These spirea varieties need to be trimmed almost immediately after flowering. If they are trimmed late, like in the winter or early spring, you will be removing the future flower buds on the limbs. WHEN TO PRUNE a spirea bush? Right after it's done blooming is the best time. That's late spring-early summer. Here's a picture of my spirea from a greater distance.