About Viola glabella Nutt.
Viola glabella Nutt., commonly known as stream violet or pioneer violet, is typically found along streams or in moist woods in northeastern Asia and northwestern North America. This species is a perennial deciduous herb that reaches approximately 0.1 meters in height and 0.2 meters in width. It blooms from April to July, and dies back completely to its roots each autumn. Both sides of its petals are yellow, except for dark purple nectar guides on the front of the lower three petals. Both flowers and leaves grow from the same stems. It prefers moist, well-drained soil and can grow in partial shade. It grows well in acidic and neutral soils, and prefers a pH between 6 and 6.5. If soil pH is too high, the plant will develop chlorosis. Its young leaves and flower buds are edible, and can be eaten raw or cooked. However, the plant's yellow flowers can cause diarrhoea.