A sport of H. ventricosa, this cultivar was registered by Alan Bloom of England in 1984. It forms a large size mound with shiny, yellow, heart shaped foliage. The medium purple, bell-shaped flowers with purple anthers are borne in July. The flower scapes may have faint red on them and bear a single bract about half way up.

According to The Hostapedia by Mark Zilis (2009), "The original plant probably developed some gold streaking, giving 'Gold Flush' its identity. The few plants that I've observed, however, were identical to H. ventricosa 'Aureomarginata'."