About Eryngium giganteum M.Bieb.
Eryngium giganteum M.Bieb. reaches a height of around 1 metre (3 feet 3 inches). In summer, it produces branched clusters of pale green conical flowerheads, which are surrounded by spiny bracts. Its flowers turn blue as they reach maturity. This plant typically dies after flowering, so it is normally grown as a biennial. It is cultivated as an ornamental plant for garden use. Both the species itself and its cultivar 'Silver Ghost' have received the Royal Horticultural Society's Award of Garden Merit. Its common name references Ellen Willmott, who is reputed to have always carried its seeds with her and planted them in the gardens of other horticulturalists.
