plantain lily (hosta) 'empress wu' forms impressive, deeply veined, dark blue-green leaves

attractive beautiful blooms bluegreen botanical botany closeup cultivar dark deeply veined details flora foliage funnelshaped garden gardening green hosta hostaceae large largest leaf leaves lilies macro margins mound nature ornamental palest perennial plant plantain lily summer textured thick upright violet woodland 'empress wu' forms impressive blue-green funnel-shaped