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Oct 25, Japanese spirea should be tip pruned in late winter or early spring prior to bud swell and before the shrub leafs out. Also, at this time, remove any dead, damaged or diseased stems along with those that cross each other. To keep spirea looking great and to promote blooming, trim the plant at least twice per year.

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 bushcutting.barted Reading Time: 5 mins.

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. Oct 15, The Best Time to Prune Spirea Most of the varieties of spirea can be pruned after their blossoms. It is seldom to trim them during the spring season, but there are some that should be strictly pruned at that time only.

The ones mentioned above are examples of this shrub that require pruning on or before the month of June ends. Jun 23, The right time to prune the species that bloom in spring is after flowering, ie late spring. Those spireas that bloom during the summer: in this second case there is the false spirea, and it must be pruned before the growth of spring bushcutting.barted Reading Time: 9 mins.

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.