09/16/2026
Hello Gardeners,
One of the best aspects about growing perennials is that they return year after year, growing a little larger each season. But as the years pass, many perennials begin to become overcrowded. The roots grow so large that the plant struggles to bloom, and often the center of the plant begins to die off, while the edges continue to spread. With fall fast approaching, it’s now time to look at many of the perennials growing in your flower beds to see if it’s time to divide them. There are several reasons why dividing perennials is important, and autumn just happens to be one of the best times of the year to get the job done.
When September comes, it becomes easy to see which perennials have grown too big for their space. And by dividing now, the roots have plenty of time to settle in before winter and the flowers will be ready to start growing again come springtime. Here are a few of the more common perennials that benefit from fall division and replanting.
Hosta – Hostas are one of the most common perennials in shade gardens. Because hostas expand steadily every year, they can quickly outgrow their allotted space. Begin by digging up the entire clump of roots with a sharp spade. Next, pull apart the clump into sections, or use a knife or shovel for the task. Each division should have several healthy shoots and roots attached. Replant the divisions right away, giving them enough room to grow and expand for several years.
Daylily – Daylilies are tough plants that bloom for years with very little care. To divide daylilies, cut back the leaf fans to about six inches tall. Next, dig up the root clump and shake off any excess soil. Using your hands, as daylily roots usually separate easily, pull apart the root ball into smaller sections. Replant these divisions in enriched garden soil and water them in well.
Coneflower – Coneflowers are a popular perennial that should be periodically divided to prevent overcrowding. Cut the spent foliage back, then gently dig around the roots. Carefully ease the root ball out of the ground, and remove the excess soil, so the tuberous roots are easier to see. Using a spade, separate the roots, making sure each division has three to five fans with plenty of healthy roots. Replant in full sun and water in the new plants.
Dividing perennials is a great garden activity for this fall. Not only does it increase your perennial numbers, but it also boosts growth for existing plants and improves flowering the following spring and summer.
Happy Gardening,
Barb
