Smooth Petunia
Ruellia strepens
Native range includes southern MN, this very pest and disease-free plant prefers rich open woods and borders of streams and ponds. Each 2” lilac-lavender flower resembling a petunia, lasts only a day but the bloom period of the plant is exceedingly long from May through September. It will live in deep shade, but produces fewer blooms. A nice care-free plant for the edge of the pond. Will self-seed.
Size: 18 to 30 inches
Zone: 4 – 8
Light: Sun to shade