Olearia tenuifolia, commonly known as the thin-leaf daisy-bush,[2] is a small shrub that is endemic to the south-east of continental Australia and has narrow leaves and clusters of blue, deep mauve to purple flowers.

Olearia tenuifolia is a shrub to 2 m (6 ft 7 in) high with scattered leaves arranged alternately along the stem.

The flowers are mauve, purple or blue with a yellow disc floret, borne singly or in loose clusters at the end of branches on a peduncle 30 mm (1.2 in) long.

Flowering may occur anytime throughout the year and the fruit is a dry, silky achene.

[2] Olearia tenuifolia was first formally described in 1867 by George Bentham and the description was published in Flora Australiensis.