Gastrolobium bilobum, commonly known as heart-leaved poison, is a bushy shrub which is endemic to south west Western Australia.

Between late winter and early summer (August to December in Australia) it produces yellow-orange pea-flowers with a central yellow area encircled by a band of red, and a maroon keel.

[3] The species was first formally described by botanist Robert Brown and published in Hortus Kew in 1811.

[4][5] In the nineteenth century as a plant within the group of gastrolobium, it was written about in the local press.

It occurs in the south-west of the state, usually on granite-based soils on peaks and outcrops as well as along rivers.