Kunzea flavescens is a spreading shrub, sometimes a small tree which usually grows to a height of about but sometimes to . The leaves are arranged alternately along the branches and are oblong to lance-shaped with the narrower end towards the base. They are mostly long and wide on a
pedicel less than long. The leaves are flat, slightly hairy when young and have more than sixty oil
glands visible on the lower surface. The flowers are white or cream-coloured and arranged in rounded groups of eight to fifteen flowers on the ends of the branches. There are egg-shaped
bracts which are long and about wide and smaller paired
bracteoles at the base of each flower. The
floral cup is long and hairy. The
sepals are triangular, about long and hairy on their edges. The
petals are oblong to egg-shaped with the narrower end towards the base, about long and there are about fifty
stamens long, in several rows. Flowering occurs mainly in September and October and is followed by fruit which an urn-shaped
capsule about long. ==Taxonomy and naming==