Olearia cydoniifolia is a shrub that typically grows to a height of up to. It has scattered ellipticleaves arranged alternately along the branchlets, long and wide on a petiole up to long. The upper surface of the leaves is glabrous but the lower surface is covered with felt-like, silveryhairs. The heads or daisy-like "flowers" are in corymbs near the ends of branchlets and are in diameter on a peduncle up to long. Each head has six to ten white ray floretssurroundingthirteen to seventeen yellow disc florets. Flowering occurs in October and November and the fruit is a silky-hairy achene, the pappus with 40 to 44 bristles in two rows.