This shrub has many slender spreading branches that form bushy rounded habit. It has grey-green oblong leaves that give off a lemon scent when crushed and the red tubular flowers appear in a cluster during spring. 

Hardiness zones 9 to 11

Darwinia citriodora is naturally found in Western Australia growing in very well drained fertile moist sandy soil in an open sunny position and is frost and drought tolerant.
 
The Lemon Scented Myrtle is grown for its bushy habit and its flowers. It is planted small gardens along borders or trimmed to form a hedge. It is also planted in coastal or native gardens and is commonly used in commercial landscapes. It is planted in tubs or planter boxes and establishes in 1 to 2 years. ID 758

Darwinia (dar-WIN-ee-uh) citriodora (sit-ree-oh-DOR-uh)

Myrtaceae (mir-TAY-see-ee)
Myrtle, Eucalyptus, Clove and Guava Family