Dividing is when you dig up a perennial and either pull or cut it apart into sections or divisions. Older perennials grow poorly, and dividing reinvigorates them. Dividing also keeps perennials from overgrowing or encroaching on neighboring plants. Most often, dividing is done to increase plant stock. You can cut a large perennial into sections and replant those sections elsewhere in the garden, and dividing allows you to share your plants with a gardening friend!
