An Amorphophallus titanum or titan arum, commonly known as the corpse flower, has bloomed at the Australian National Botanic Gardens in Canberra for the first time.

The 15-year-old plant started unfurling its 135 centimetre-tall flower spike on Saturday afternoon, emanating a putrid stench described by some as smelling like “dead rat”.

The bloom is expected to start collapsing by Monday afternoon and will gradually return to a dormant state as an underground corm.