Hardenbergia violacea syn. H. monophylla is a species of flowering plant in the pea family Fabaceae, native to Australia from Queensland to Tasmania. It is known in Australia by the common names false sarsaparilla, purple coral pea, happy wanderer, native lilac and waraburra.

It is a vigorous evergreen climber growing to 6 m (20 ft) or more, sometimes growing as a subshrub. It has typical pea-like flowers which are usually violet but can be white, pink or other colours. The leaves are dark green, "hard" and leathery, with prominent venation.

H. violacea is a widespread species found in many habitats. It is also widely grown as a garden plant, with many cultivars now available. It is hardy in mild and coastal areas of the UK where temperatures do not fall below −5 °C (23 °F), but it does require a sheltered, south or west facing situation. Alternatively it may be grown indoors with full daylight, for instance in an unheated conservatory or greenhouse.

Soil: Moist well drained loams of neutral to slightly acid pH. Maintenance: Prune lightly and regularly to maintain shape and promote fresh growth - prune more firmly after flowering. Fertilise with a balanced, controlled release formulation in spring or late summer. Take care to use a low phosphorus fertiliser as this is a native and they do not like it and may keel over and die.