|'Johanna' is a deciduous perennial with medium green leaves, to 3/4 inches long. Early in the season, produces few-flowered umbels of clear pink flowers with yellow eyes, 1/2 inch wide.
Partial shade in humus-rich, well-drained, moist soil, or grow under glass. Tolerates full sun if soil is kept moist. 4 inches tall, 6 inches wide.