Revive Overcrowded and Struggling Perennials

Fall is the best time to divide spring and summer blooming perennials that are overcrowded, dead in the center, failing to flower or flopping open. Wait until spring to dig and divide fall or summer blooming perennials that were not moved the previous fall.

These are guidelines that increase success, but most gardeners have found that the best time to divide is when you have the time and can provide good, proper post-transplanting care.

Use a sharp-edged shovel to dig the perennial, roots and all, out of the ground. Lift the clump out of the soil and use a linoleum, garden knife or drywall saw...