They prefer a moist soil with average fertility. Soil too damp, or too rich, causes plants to flop over. The plant grows in sun or partial shade but prefers partial shade. After flowering they may be cut back to promote new foliage and possible re-flowering in early autumn. Plants finished flowering may create a poor appearance.
Propagation is by division in the spring.
1999,Willoway Nurseries 1999. This information is for educational purposes only. References to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. This information becomes public property upon publication and may be printed verbatim with credit to MSU Extension. Reprinting cannot be used to endorse or advertise a commercial product or company.