Plants are preferred when they are pruned: some perennials need to be cut back in the fall, while others do not respond well to fall pruning. It's a good idea to know your yard's plant preferences, as pruning at the wrong time of year can reduce flowering and cause other problems. Listed below are some of the best perennials that benefit from a late-season trim to promote better growth and reduce the risk of certain garden pests and diseases such as powdery mildew. 1. Bee Balm Some gardeners prefer not to prune their bee balm (Monarda spp.) plants because birds and other wildlife often eat the seeds during the winter. However, if bee balm has struggled with powdery mildew problems during the growing season, it should be cut back in the fall. Pruning infected plants is one way to keep this plant disease from spreading, but watering your plants at the soil line and following proper spacing recommendations can minimize fungal problems. 2. Shining star Burning star (Li
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