Blue, pink, or white flowers are produced in June. Divide the plant in late summer or propagate from cuttings in mid-summer. The flowers are blue and removal of seed heads may encourage a second crop of flowers. Provide sun to partial shade and any ordinary garden soil but avoid hot dry conditions. Propagation is by seed, division or cuttings.
Division is done spring or fall.
Plants rise out of the ground as they age so need dividing. Stem cuttings can be taken in summer. Visuals associated with this text. 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.