ruby said:

Michael V said:

Michael V said:

It’s not Hibiscus. It’s a native vine whose name I cannot recall.

I was in part wrong. It’s not a native. It is an invasive ornamental. Yellow allamanda – Allamanda cathartica.

https://www.business.qld.gov.au/industries/farms-fishing-forestry/agriculture/biosecurity/plants/invasive/other/yellow-allamanda

You got Allamanda right. Shame its not native as it is eye catching.

I’ll tell you what I want to be a native – Briza. Both major and minor. Love those grasses!