Thank you.". Sign up to get all the latest gardening tips! The following summer, cut out about half of the new canes and shorten some of the remaining canes. Also, trimming spirea back, in many cases, will induce a second bloom. A blast of water from the garden hose usually works to dislodge aphids. Give it a good trim after it flowers in the spring by cutting back the tips of the stems to the top leaf bud. Include your email address to get a message when this question is answered. wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. wikiHow is where trusted research and expert knowledge come together. If you have any questions, remember that you can contact us to make your inquiries. To keep spirea looking great and to promote blooming, trim the plant at least twice per year. ", me with clear and easy-to-understand directions of when/how/why to prune each variety for better blooms and growth. At the beginning of the second and third growing seasons, you should also cut back the water sprouts or suckers that developed. What if I have no idea what kind of spirea I have? ", "What to do to older plants looking sad.". {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/2\/20\/Prune-Spirea-Shrubs-Step-1-Version-2.jpg\/v4-460px-Prune-Spirea-Shrubs-Step-1-Version-2.jpg","bigUrl":"\/images\/thumb\/2\/20\/Prune-Spirea-Shrubs-Step-1-Version-2.jpg\/aid4911745-v4-728px-Prune-Spirea-Shrubs-Step-1-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

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