The white or pale yellow flowers of hibiscus coulteri
are formed of five broad, fan-shaped, slightly overlapping petals colored deep red at the base. At the center are many small stamens and five dark anthers, while a ring of narrow, outwards-pointing green bracts is found underneath. Flowers are about 2 inches in diameter and occur singly at the end of thin stalks, on a lightly-branched, shrub-like plant that is quite inconspicuous when not in bloom. Stems are rigid and woody. Flowers can appear any time of year, following significant rainfall.