Pandorea pandorana aka Wonga Wonga Vine

Pandorea pandorana is a woody climber in the trumpetvine family, Bignoniaceae. Its common names include wonga-wonga vine, spearwood, and Pandora vine. Its native range spans the Lesser Sunda Islands, Australia, and New Caledonia. It grows in regions with a seasonally dry tropical climate. This evergreen vine grows fast and climbs with twining stems.

Garden size varies between sources and growing conditions. RHS gives heights of 13–26 feet [4–8 metres]. Its listed spread is about 3–5 feet [1–1.5 metres]. NC State gives larger limits of 50 feet [15.2 metres] tall and 20 feet [6.1 metres] wide. The vine can cover trees and structures or form dense mats. Its opposite leaves are glossy green and pinnate. NC State records three to nine leaflets per leaf. RHS describes leaves with six pairs of leaflets. Young leaves have fine divisions that give them a fern-like look.

Loose clusters of hanging, tubular flowers provide the main display. They have a scent and range from creamy yellow to white. Red or purple marks can appear inside the throat. RHS records flowering in winter and spring. NC State highlights the early spring display. Bees and butterflies visit the flowers. The oblong fruit capsules start green and turn brown. They reach about 0.13–0.25 feet [0.04–0.08 metres] long. Ripe capsules release many thin, papery seeds in summer.

Grow this vine in full sun or partial shade. It accepts a wide range of soils and pH levels. RHS favours moist loam that drains well and a sheltered site. NC State also reports drought, heat, and humidity tolerance. Its listed USDA range is zones 9–11. RHS rates it H1C for UK conditions. There, outdoor survival needs a warm wall in very mild areas. Elsewhere, RHS recommends a cool greenhouse or conservatory with full light.

Use it on fences, trellises, buildings, or wall-side borders. It also suits containers and can grow as a houseplant. Prune after flowering to control its size. Stems can root by layering, and seeds also spread it. Aphids and glasshouse red spider mites may attack it. RHS reports few disease concerns. Indigenous Australians used its wood to make throwing devices. The supplied sources establish neither edible uses nor its safety when eaten.