Echinocereus arizonicus [3] is a species of cactus native to the Chihuahuan Desert region of Chihuahua, southwestern New Mexico and southeastern Arizona, as well as in the Superstition and Mescal Mountains of Central Arizona at elevations between 1400 and 1900 meters.

Echinocereus arizonicus has deep red to bright orange-red flowers, sometimes with a lighter yellowish-green center,[2][5] 5.5 cm–7 cm × 3.5 cm–5 cm (2.2 in–2.8 in × 1.4 in–2.0 in), with a flower tube of 25–35 mm (0.98–1.38 in) that has short spines and 2 mm (0.079 in) hairs.

Fruits are green with a brownish tinge, 20–30 mm (0.79–1.18 in), and have white pulp.

[6] Plants are found growing in desert scrub and grasslands of the Chihuahuan Desert in Arizona, New Mexico in the United States and Chihuahua, Mexico at elevations between 1400 and 1900 meters.

[7] Plants are found growing along with Quercus turbinella, Quercus emoryi, Arctostaphylos pungens, Cercocarpus montanus, Nolina microcarpa, Dasylirion wheeleri, Agave chrysantha, Muhlenbergia emersleyi, Pinus monophylla, Juniperus pinchotii and Rhus trilobata.