Mar 02, You should actually prune your spirea more than once a year, at least twice. Give it a good trim after it flowers in the spring by cutting back the tips of the stems to the top leaf bud. This removes the dead blossoms and also may trigger a second blooming and new leaf growth. You can also shape the shrub at this time. Oct 25, Spirea shrubs respond well to pruning.
In the spring, after the first blooms are spent, cut the dead flowers back by trimming spirea’s stem tips back to the topmost leaf on each stem. Throughout the summer, the plants shape can be maintained by cutting back overgrown spirea shoots or stems as well as any dead or diseased branches. May 07, 2. Prune to make tight mounds. If you like a dense, structured look, prune just as new leaves start to show in spring.
Use hedge clippers to shear off no more than half of the top growth. You’ll get a tight, habit with more, but smaller, flower treecleanup.buzz: Jim Childs. Jun 23, Advertisement. There are several tools that you will need to perform your pruning or trimming of a spirea. Each of them is appropriate for different cases depending on age, time of year, type of pruning, etc.
Hand Pruning Shears: Stems up to half inch in diameter can be pruned with hand treecleanup.buzzted Reading Time: 9 mins. May 03, Cut out about a third of the old, thick wood to the base (you may need a pruning saw for this job, or loppers may be strong enough). This will open up the shrubs a lot and make it easier to see what else needs to be removed. Any dead, diseased or crossing branches should come out as well.