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10 Tips on Dividing Perennial Plants Divide to make healthier plants--and more of them. When dividing perennials, timing and technique are important. Perennial plants are healthiest and most productive when they are young and have room to spread. How wonderful that we can rejuvenate even the oldest residents of a garden by occasionally dividing them.
How to divide overgrown perennials to make new plants. | And which ones to divide when!