These shrubs tend to bloom in the spring and summer months, though some varieties.

Mar 30, The best time to prune spirea is after the first flowering.

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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 bushmulching.barted Reading Time: 5 mins. Mar 02, Trim straight across the top of the plant, and when you release the rope you’ll have a perfectly rounded spirea.

Look out for curled leaves as a sign that aphids are taking over.

The two main trimming periods, in early spring and after blooming, are most important to do each year, but you can also trim your spirea as needed throughout any season. Nov 30, BrightView Horticulturist Scott Kopitskie explains how to properly prune a spirea to increase the plant's bloom and control its size. Summer-flowering shrubs, such as potentilla and Japanese spirea, bloom in summer on the current year's growth.

Prune summer-flowering shrubs in late winter or early spring. The pruned shrubs will bloom in summer on the current season's growth. Some. Prune spring-blooming spirea during or just after stump grinding crosby texas, if desired.

Cut the branches back to a desired height and shape, removing no more than one-third of the branches. Prune just above a.