After blooming the plant dies down by mid-summer, leaving a gap in the garden. The flower buds are reddish purple before they open to blue flowers. The plants grow in shaded spots and tolerate most soils. A sandy, peaty soil is preferred. Once the plant is established it doesn't like to be disturbed.
Propagation is by seed or division, but seed is more reliable.
The best planting time is in October or from March to April. 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.