Cheone glabra Black Ace

This is a tall, dark-leaved cultivar of our native white Turtlehead.  Grows best in medium to wet, rich humusy soil.  Good for bog and rain gardens, around ponds, and for erosion control.  It is rhizomatous (spreading rhizomes) so it is best to let it nagturalize in an informal garden.    Plant Part Shade.  Attracts butterflies.  Bloom late summer.  (Hardy to Zone 5)