one of the largest hosta blue umbrella with giant, blue-green, thick-textured, corrugated, heart d leaves growing in

corrugated hosta sieboldiana attractive beautiful blue botanical botany bright close closeup cultivar details flora foliage garden gardening geometrical giant green heart shaped hostaceae huge largest leaf leaves lilies macro margins nature ornamental perennial plant plantain lily shady summer sunlight thicktextured umbrellalike woodland one ′blue umbrellas′ blue-green thick-textured growing umbrella