A vigorous and attractive climbing plant producing masses of showy purple pea flowers, occasionally pink or white, carried in long racemes through winter and spring. When in full flower the foliage may be almost completely covered, creating a spectacular display that attracts birds and pollinators. The dark green foliage is generally concentrated toward the upper sections of the climber, making it particularly effective for covering fences, trellises and embankments or scrambling through other vegetation.
Hardenbergia comptoniana naturally occurs in the south-west of Western Australia, where it grows across sandplains, coastal dunes, limestone areas, and woodland and forest margins further inland. It is found in a range of well-drained sandy and clay-based soils, thriving in open sunny to lightly shaded positions with good air circulation. A hardy and adaptable species, it is drought tolerant once established and responds well to occasional pruning after flowering.