Remove from your bushcare site or garden

Be on the lookout for the pretty but weedy creeper Fragrant Thunbergia Thunbergia fragrans which has been spotted at Walton Bridge Reserve in The Gap. Spreading easily from stem or root fragments, Fragrant Thunbergia is closely related to Black-eyed Susan Thunbergia alata also a weed in Enoggera catchment. At first glance the vine looks somewhat weak and innocuous but it is sufficiently menacing for Brisbane City Council Weed Identification Tool to warn that it is potentially a significant environmental weed in Queensland.

While the leaf shape is variable, the white flowers sit on two prominent, leafy, ovate bracts that are 1.5 to 2.5 cm long. Like many successful weeds it spreads via seeds and easily regenerates from stem or root fragments. Bushcarers are advised to treat with glysphosate using cut stump method or foliate spray. Remove green waste from bushcare sites or gardens site. Then place in a general waste red-top or green-top bin.

Thunbergia fragrans is a Class 1 plant under the Land Protection Act 2002, making it an offense to introduce, keep, or supply without a permit.

Fragrant Thunbergia Thunbergia fragrans photographed at Walton Bridge Reserve near the footbridge over Fish Creek, June 2026. The flowers sit on two prominent, leafy, ovate bracts that are 1.5 to 2.5 cm long. Leaf shape is variable. Photo: Anne Jones