[4] Deinandra minthornii is a shrub or subshrub growing 15 centimetres (5.9 in) to 1 metre (3.3 ft) in height.

The stems are grow mainly from the base of the plant and are puberulent (hairy) to short-bristly, minutely glandular, and densely leafy.

The leaves are often deciduous, 2–3 centimetres (0.79–1.18 in) long blades that are thick, linear, proximal and pinnatifid or pinnately lobed to toothed; they are hirtellous (short-coarse-hairy), sometimes stipitate-glandular (stalked-glandular).

[9] D. minthornii is endemic from the Santa Susana Mountains, through the Simi Hills, to the Santa Monica Mountains of the southwestern Transverse Ranges, in Los Angeles and Ventura Counties, Southern California.

It can be found on rocky outcroppings and in sandstone crevices, from 300–500 metres (980–1,640 ft) in elevation.