|C. linearis has narrower leaves than C. citrinus and will not be nearly as large in maturity. The flower spikes are similar in color but haven't the shimmery quality of C. cintrinus. 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.