Cassinia arcuata, commonly known as drooping cassinia, biddy bush, Chinese scrub, sifton bush[2] and Chinese shrub,[3] is a species of flowering plant in the family Asteraceae and is endemic to Australia.

It is a shrub, sometimes a small tree with sessile, linear leaves, and heads of up to two hundred brownish flowers arranged in pyramid-shaped panicles.

[2][4][5][6] Cassinia arcuata was first formally described in 1818 by Robert Brown in Transactions of the Linnean Society of London.

[5][9][10] Richard Hind Cambage used the name "Sifting Bush" for this species in 1902, comparing the fallen florets to "the 'siftings' which are blown away from grain by a winnowing machine".

It requires well-drained soils, grows in full or partial shade, but does not tolerate salt winds and is not long-lived.