Spiraea should be pruned regularly. If you don't want to do maintenance pruning every year, prune your plant radically every three to four years. If you do not cut at all, the spirea will become lignified.
The beautiful blossoms of the spirea can also be cut for the vase
The hedge trimming
Hedges should be trimmed regularly to keep them in shape. So that you don't get into trouble, you should comply with the legal regulations for hedge trimming and not trim your hedge between March and September. There are no special features of spirea compared to non-flowering hedge plants. He doesn't take offense to a radical cut too easily.
Cut the spirea for the vase
The non-toxic spirea also looks good in a vase, but only when the flowers are open. Do not cut the spirea until it has fully bloomed, because the closed buds will not open in the vase.
Cut back after flowering
Only the early flowering varieties of Spiraea are cut back immediately after flowering. For late-flowering varieties, wait until next spring after the frost before pruning. Be sure to use sharp pruning shears to avoid squashed branches. Like shoot stumps, these can lead to fungal infections or the intrusion of pests.
Cut off all diseased and weak shoots, and one at a time from crossing branches. To thin out the spirea, shorten the oldest shoots to about 20 cm in length. If you like, you can give your spirea a topiary. If this does not succeed optimally, any errors will soon grow together again. You can use healthy shoots for cuttings.
The essentials in brief:
- only cut fully blossomed spirea for the vase
- Observe legal requirements when trimming hedges
- use sharp secateurs
- Do not squeeze branches
- do not leave any shoot stubs
- remove all diseased shoots
- do not leave crossing branches
- Use healthy shoots as cuttings
tips
Since the spirea tends to grow quite luxuriantly, it can be pruned fairly generously, but not in frost or blazing sunshine.