Rhododendron menziesii (formerly Menziesia ferruginea) is a species of flowering plant in the heath family known by several common names, including rusty menziesia, false huckleberry, and mock azalea. It is native to northwestern North America from Alaska through the Pacific Northwest to Wyoming, where it is a member of the flora in mountain forests. It grows in the understory of subalpine fir (Abies lasiocarpa), Pacific silver fir (A. amabilis), western redcedar (Thuja plicata), western hemlock (Tsuga heterophylla), and other conifers. The plant prefers cold, wet, densely vegetated areas where it can grow in deep shade.