Borzicactus sepium grows as a shrub with mostly little or no branches from the base, lying to ascending, light to dark green shoots and reaches heights of 0.5 to 2 meters with diameters of 3 to 10 centimeters.

The bristly to needle-like thorns are brown, yellowish or blackish and turn gray with age.

[2] Accepted supbspecies:[3] Borzicactus sepium is widespread in northern and central Ecuador at altitudes of 1500 to 3500 meters.

Nathaniel Lord Britton and Joseph Nelson Rose placed the species in the genus Borzicactus in 1920.

[5] Further nomenclature synonyms are Cereus sepium (Kunth) DC.