Costus woodsonii, the red button ginger or scarlet spiral flag, is a species of flowering plant in the family Costaceae, native to Nicaragua, Costa Rica, Panama, and Colombia.[2][3] A rhizomatous geophytic perennial, it is recommended for coastal gardens, borders, containers, and general wet, tropical garden applications.[3] It is more widely cultivated than other species of Costus.[4]Costus woodsonii was first described by Paul Maas in 1972 and is named for Robert Woodson of the Missouri Botanical Garden.
