Controlling Diseases and Pests them apart with your fingers or making small cuts with a knife. Divide large, dense clumps using two spading forks back-to-back. In general, replace one or two healthy divisions in the original hole and plant the others elsewhere.
Some species have large taproots and should not be divided or moved unnecessarily. Examples are baby's-breath, balloon flower, butterfly weed and lupine.
Was this article helpful?