Great, underused perennial for the garden and meadow. Western: Tough, drought tolerant. Fall: Few seeds are fertile, so sow thickly when soil temperature is warm. May also propagate by root division and softwood tip cuttings. Spring: Leave stems till spring to provide nesting habitat for tunnel-nesting bees. Woolly: Needs well-drained conditions. Fall: Collect seed when it comes loose easily. Propagation: Seed.