Pycnanthemum incanum, hoary mountain mint [SEEDS]

Culture notes: Strongly minty perennial wildflower reaches between 3' and 4' and forms colonies in full sun or part shade. Tolerant of drought and moist soil alike. Soft and silvery white ovate leaves surround sculptural heads of tiny flowers that mesmerize pollinators for months on end.  Sow seeds on soil surface in a warm place and tamp in gently.