|Nerium oleander is an evergreen shrub reaching 6 to 12 feet in height and spread, occasionally 20 feet. Not cold hardy, so subject to freeze damage. The leaves are dark green throughout the seasons. Flowers bloom in summer to early fall; each flower is 1 1/2 inches in diameter, borne in terminal cymes on new growth. Flowers are showy, fragrant, pink, white, salmon, rose, red or magenta, singles and doubles. Various cultivars are available. Bears a slender pod fruit, not really ornamental. It is tolerant of seascapes, likes well drained, fertile soil, withstands dry conditions and pollution. Native to southern Asia, Mediterranean area. Toxic plant. 'Sister Agnes' is a vigorous shrub that produces single pure white flowers.