Senecio is a genus of the daisy family (Asteraceae) that includes ragworts and groundsels. The flower heads are normally rayed, completely yellow, and the heads are borne in branched clusters. Senecio is one of the largest genera of flowering plants, and despite the separation of many species into other genera it still contains over 1000 species of varied form, including leaf, stem and tuber succulents, annuals, perennials, aquatics, climbers, shrubs and small trees. Some species produce natural biocides (especially alkaloids) to deter or even kill animals that would eat them.

Senecio cinerascens commonly known as Handjiebos or Vieroulap is a South African indigenous species from the Northern Cape and Western Cape Provinces. It grows into a shrub of 1 meter tall. It has ash-grey leaves. From winter to spring it bears showy yellow flowers. This is a very attractive species. It is synonymously known as Cineraria seminuda, Senecio namaquanus and Senecio tomentosus.