Oregon Oxalis is a perennial groundcover. It has white flowers and spreads by roots. Best in moist areas, wooded stream-sides. Oxalis contains oxalic acid, which gives them a sour, tangy taste similar to rhubarb. It is potentially harmful if eaten in large quantities. This plant attracts Butterflies, Moths, Honeybees, and other pollinators. This plant can grow between 2 – 4in tall.