A lot of my perennials are looking worn out and unsightly. Can I prune them back in fall? A friend told me I should wait until spring.
When your perennial plants have run through their summer cycle of growing, flowering and going to seed, it's time to prune them back. They'll look a lot better. In addition, trimming removes dead and decaying plant material that harbors diseases and insects. So, go ahead and trim your perennials. Be sure you remove the trimmings from your perennial beds. Your garden environment will be a much healthier place, and look better, too.
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