Eucalyptus multicaulis is a mallee that typically grows to a height of and forms a
lignotuber. It has smooth white or grey bark, sometimes with rough bark near the base of the trunks. Young plants and
coppice regrowth have broadly egg-shaped, bluish or greyish green leaves that are long and wide with a short
petiole. Adult leaves are lance-shaped or curved, the same shade of glossy green on both sides, long and wide tapering to a petiole long. The flower buds are arranged in leaf
axils on an unbranched
peduncle long, the individual buds on
pedicels long. Mature buds are oval to club-shaped, long and about wide with a rounded
operculum. Flowering occurs from September to November and the flowers are white. The fruit is a woody conical
capsule long and wide with the valves near rim level or slightly below it. ==Taxonomy and naming==