E.longifolia is common in moist sandstone gullies around the central coast of New South Wales (Australia). It is typically a fairly straggly shrub comprising several long, arching branches and is usually less than a metre in height. The leaves are small and triangular in shape with a sharp point.
The flowers are narrow and tubular, up to 40mm long and occur along the branches. They contain nectar and are frequented by honey-eating birds. The typical color is red with a white tip but some variations are in cultivation such as a fully white form.
The species should be given a well drained position in semi shade but should not be allowed to dry out.
Propagation of E.longifolia is usually by cuttings of firm current season's growth. Cuttings are probably best placed into individual small pots or tubes to minimise root disturbance.