Drosera drummondii is a scrambling species of tuberous sundew native to Western Australia. The plant grows a long glabrous stem, which can reach over a meter in length. The leaves typically emerge in groups of three (although older nodes will grow another leaf or two), with one leaf having an especially long petiole to latch onto surrounding vegetation. The flowers are large, and typically pink or white. It has a wide range and grows sandy soils, usually somewhat near the coast.
The species is a member of the D. menziesii complex, and can be distinguished by its climbing habit. Additionally, its sepals are hirsute, which separates it from the similar Drosera thysanosepala. Prior to its formal publication, it was known as Drosera menziesii subsp. penicillaris. The glabrous stems distinguish it in the first instance from plants in the Drosera macrantha complex, which have a similar climbing morphology.