Cool member of the true Ginger family, this has torches of soft yellow flowers held above the corn-like foliage.  Blooms reliably here unlike a lot of it's kin with flowers in July & Aug.  Adds an easy tropical look.  This has been sold as C. lutea and C. gracilis.  Rich & moist but not boggy.

Cautleya have proved to be excellent plants for the garden here and one of the best is this Wynn-Jones collection from the Darjeeling area in northern India.  Good red bracts hold yellow flowers in a tropical embrace during August into September in your temperate garden.  Part sun to light shade in rich moist soil.  Mulch in winter in case of arctic annoyance.