Plants have tall stems over 4 feet tall with many pinkish-purple flowers along the top 1/3 of the stems and interesting cut 'leaves.' An attractive plant best used in a dense thickly planted garden or wild area, as they self seed readily, its easily enough to remove young plants and they start blooming very early. Here in Minnesota Leonurus sibiricus are best grown as annuals that start blooming in June/July and they continue to flower until frost. Allow a few seedlings to grow next year. Perennials in warmer areas. This in one of those plants that will move around the garden from year to year. Works well with most other tall plants.