Hebe carnosula is a low-growing, fairly compact, evergreen shrub to about 16 in (40 cm). The leaves are grey-green, oval, concave, 0.5 in (12 mm) long, and 0.3 in (7 mm) wide, with yellowish margins. The flowers, in white spikes, open from pink bud, and crowd the branch tips. Summer flowering, and useful in a border edge or as ground cover. A hardy hebe in the UK.
This plant has been confused with some forms of Hebe pinguifolia, which may have a small leaf sinus. Hebe carnosula has a prominent leaf sinus. It has been confirmed as a species, which has a very limited distribution in northern South Island, New Zealand.