Callirhoe involucrata var. lineariloba "Logan Calhoun" (Prairie Poppy Mallow)
Named for the person who discovered this pure white Prairie Poppy Mallow on the Southern Great Plains, "Logan Calhoun," blooms in summer and grows from 6 to 12 inches high. It is mat forming, making it an ideal ground cover. It also has a long taproot, which makes it ideal for dry conditions, but it also makes it difficult to move, so plant it for keeps. It grows in dry to medium moist soil (avoid poorly draining soil, as crown rot may occur) in full sun. Zones 4-9. Quarts.