one of the largest hosta blue umbrellas with giant, blue-green, thick-textured, corrugated, heart d leaves and pale

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 lavender leaf leaves lilies macro margins nature ornamental pale perennial plant plantain lily purple shady summer sunlight thicktextured umbrellalike woodland one ′blue umbrellas′ blue-green thick-textured flowers growing