Ferocactus histrix f. variegata

F. histrix in its variegated form represents a very sought after exemplar because the variegation is never the same in the plants and makes each specimen unique. The yellowish hues of the variegation contrast perfectly with the intense green of its stem. It is a slow-growing cactus with a solitary posture. Its bluish-green stem, initially globular, can become columnar with the growth until reaching the height of one meter. It has numerous minute ribs of woolly areolas, from which long and robust central spines grow, with a reddish-brownish color tending to yellow towards the tips; the radial spines are, on the contrary, thinner and of yellowish color. It blooms in summer generating funnel-shaped flowers with a bright yellow color, in some cases even reddish.