Melissa Strauss, a gardening expert, provides advice on pruning peonies. All herbaceous peonies benefit from being cut back in autumn, while tree peonies should not be cut back to the ground yearly but can be pruned for health and shape after blooming is finished.
Cutting back peonies occurs when the plant starts to yellow or turn brown, usually in early fall or after the first frost, sometime in late September or the beginning of October. Mastering the art of pruning peonies in the fall can prevent common issues and promote robust growth for the next spring.
The secret to knowing when to cut back peonies comes from looking at the leaves, which will tell you when it’s time. The best time to prune a tree peony is right after it blooms, as they die back every year and grow new stems from the roots each spring. You can either cut back the foliage to the ground in late fall/early winter or wait until early spring to remove.
Peonies do not bloom after being cut, and if cut too early, the next year’s bloom may be affected. Herbaceous peonies should be cut back in fall, between October and November, after the first frost and when the foliage has grown back. Some flowers need to be deadheaded, and if you do, the flower won’t grow back.
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