Mar 02, 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.
This is a shrub that responds well to trimming, so prune and shape as needed. Oct 25, Fall is the time for the most severe pruning of spirea. With sharp shears, cut each stem back to about 8 inches (20 cm.) from the ground.
Don’t worry that the plant won’t bounce back. In the spring, spirea will reward you’re courageous pruning with.
Mar 30, Wondering when to prune spirea bushes? 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 shrubdisposal.buzzted Reading Time: 5 mins. Nov 23, Spirea requires rejuvenation pruning about once every three or four years. You should cut dead and old stems back to the ground each year. False Spirea, Ural False Spirea (Sorboaria sorbifolia) Prune these spring flowering shrubs soon after they have bloomed.
Top prune the plant to improve the shape and reduce its size, but be careful not to remove more than 30% of the top growth. Some summer pruning can also be done on particularly vigorous plants, but not after mid-July. However, if you have the widespread"Anthony Waterer" spirea (Spiraea x bumalda"Anthony Waterer"), you can trim this variety directly before flowering, as well as.