Eucalyptus spreta is a mallet or marlock that typically grows to a height of and does not form a
lignotuber. Young plants have dull greyish green, egg-shaped to lance-shaped leaves that are long and wide and
petiolate. Adult leaves are the same shade of glossy green on both sides, narrow lance-shaped to curved, long and wide tapering to a petiole long. The flower buds are arranged in leaf
axils in groups of seven on an unbranched
peduncle long, the individual buds on
pedicels long. Mature buds are oval to cylindrical, long and wide with a conical to beaked
operculum about the same length as the
floral cup. Flowering has been recorded in March and the flowers are white. The fruit is a woody, cup-shaped
capsule long and wide with the valves enclosed below rim level. ==Taxonomy and naming==