Pot: 8 cm.
The crested shape of this cactus has the typical fan arrangement covered with thorns, especially along the crest; each plant will never be perfectly identical to another, therefore the shape is absolutely unique and, for this very reason, much appreciated by collectors. In its normal form, Echinocactus grusonii, also commonly called "mother-in-law's pillow", is a globular cactus with a slow growth and a solitary habit, which can become bunched over time. Its stem is light green in color, slightly concave at the apex where, over time, a thick white fluff similar to a pillow emerge. It has many well-furrowed ribs, equipped with numerous fluffy areoles of white-yellowish color, from which long and rigid yellow thorns emerge.