|Scarlet bottlebrush differs from some of the other callistemons in that the mature height is generally smaller, around six to twelve feet in height and width, the bloom time is also somewhat extended into autumn. This evergreen shrub or small tree gets its species name citrinus from the lemony smelling oil glands present in the olive green, lance-shaped leaves. Spring to summer flowers are terminal, axillary, and crimson colored. Plant in neutral to acid, moderately fertile soil in full sun. This plant is tough and makes and excellent hedge. Regular prunning is not necessary. If you do prune, immediately after flowering is best.