American germander has a long bloom time, ranging from late spring to early fall. It does like to spread so can make a nice ground cover in moist part shade, but may be too aggressive for a small garden. It attracts many native bees, butterflies, and hummingbirds. “The dense flower spikes can be quite a show, especially when a good sized clump is planted. Plants spread on their own over time by rhizomes and may become aggressive if not kept in check periodically. Prefers moist or shallow, submerged soils. Nice cut flower.” Lady Bird Johnson Wildflower Center