Olearia suffruticosa, commonly known as clustered daisy-bush,[2] is a species of flowering plant in the family Asteraceae and is endemic to south-eastern continental Australia.

Olearia suffruticosa is a sticky shrub or undershrub that typically grows to a height of 40–70 cm (16–28 in) and has a woody base and slender, short-lived glabrous stems with few branches.

[2][3][4][5][6] Olearia suffruticosa was first formally described in 1985 by David Alan Cooke in the Journal of the Adelaide Botanic Gardens from specimens collected near the Bool Lagoon in 1963.

[8] Clustered daisy-bush grows in heathland in swampy areas in the far south-east of South Australia, the south-west of Victoria near Glenisla, Casterton and Dergholm, and between Capertee and Wallerawang in New South Wales.

[2][3][4][9] This olearia is listed as "endangered" under the Victoria Government Flora and Fauna Guarantee Act 1988[3] and as "vulnerable" in the Department of Sustainability and Environment's Advisory List of Rare Or Threatened Plants In Victoria.