Greyia radlkoferi, the woolly bottlebrush or Natal bottlebrush, is a shrub or small tree, native to South Africa.

[1] It grows up to 5 metres in height and has smooth yellowish bark, becoming grey and deeply furrowed as it matures.

The leaves are oval or heart-shaped and woolly on the undersurface, which distinguishes the species from Greyia sutherlandii.

The scarlet flowers occur in dense, upright clusters from July to October in the species' native range.

[1] It is named for Ludwig Adolph Timotheus Radlkofer.