Most perennials eventually become overcrowded and require division. Information on division is available in Dividing Perennials, HGIC 1150. Many perennials are also easily propagated in this way. Other methods of propagating perennials include stem cuttings, root cuttings and seed. Selection of resistant species and cultivars, proper site selection, and good cultural practices will prevent many disease problems.
Many perennials are available in several cultivars with different color, height or other attributes.
Consult with a local nursery person or extension specialist for cultivars that are especially suited to your area. Evening Primrose Persicaria virginiana Tovara Phalaris arundinaceae var. This information is supplied with the understanding that no discrimination is intended and no endorsement by the Clemson University Cooperative Extension Service is implied. All recommendations are for South Carolina conditions and may not apply to other areas. All recommendations for pesticide use are for South Carolina only and were legal at the time of publication, but the status of registration and use patterns are subject to change by action of state and federal regulatory agencies.