hemerocallis middendorffii or amur daylily - botanical garden of the university of zurich or botanischer garten zuerich

agriculture amur aroma background beautiful beauty bloom blooming blossom botanical botanischer botanist bud bush closeup colored colors day daylily der ditch farming flora floral flower fragrance fulva fulvous garden garten green hemerocallis leaf leaves lily middendorffii natural nature orange outdoor park perennial petal plant railroad season shrub spring summer switzerland tawny tiger universitaet university vegetation wildflower yellow zuerich zurich