Echinocereus enneacanthus is a species of flowering plant first described by George Engelmann.

The cloudy to light green, cylindrical shoots, which are prostrate except for the tips, are up to 2 meters long and have a diameter of 3.5 to 15 cm (1.4 to 5.9 in).

The one to four straight or curved, round to flattened, angular or furrowed central spines are yellowish to brownish or bluish.

[citation needed] The funnel-shaped flowers are magenta colored and have a darker throat.

The spherical to egg-shaped fruits contain pink flesh and taste like strawberries.