The plant is cut back after it flowers and is hardy. Winter survival is dependent on the plant growing in well-drained soil.
Propagation is by cuttings taken in summer or by division in the spring.
Seed may also be used. 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.