It is a slender herbaceous plantgrowing to tall, with spirally arranged narrowlanceolateleaves long. The flowers are pale blue or lavender to white, often veined in darker blue, with five petals 1–1.5 cm long and in varying length styles. The flowers open in the morning and fade, dropping their petals by noon on hot, sunny days.
Blue flax is a durable wildflower in garden conditions, never becoming overly aggressive towards other plants. Plants are easily grown from seed. Blue flax grows well in lean soils without much organic matter and are healthier in well-drained soils.