The fruit is a three celled capsule containing small, dark brown seeds. The whole plant has a turpentine-like odor. The flowers appear in late summer and are bright yellow. This perennial is very tough and will tolerate any soil type, extreme heat and drought. Even with extreme wilting, usually it will revive after watering.
Seeds are very small and germination is spotty.
Seeds may be sown in outdoor seedbeds as early as October for spring germination. The plant reseeds very lightly in the garden. In early summer, propagate by stem cuttings. Should be planted about one foot apart, no fertilization is necessary. Hold the leaves up to light and you can see the oil glands or transparent dots.