Hosta sieboldiana, Siebold's plantain lily, is a species of hosta native to Japan.

[2] A putative variety, Hosta sieboldiana var.

elegans (called the giant blue hosta), has gained the Royal Horticultural Society's Award of Garden Merit, as has a putative variety of its synonym; Hosta fortunei var.

aureomarginata, the gold-edged plantain lily.

[3][4] The cultivars 'Blue Angel', 'Blue Mammoth', and 'Olive Bailey Langdon' have also gained the RHS Award of Garden Merit.