Rich, undulating ridges wrap the rounded stems of this aptly named species, which are covered in tufts of white hairs from which white to light brown, star-shaped spikes emerge. The base color of Echinops multi-ribbed ‘Brain Cactus’ is a rich gray-green, providing a beautiful backdrop for the large pink flowers that bloom in summer, which feature yellow stamens and dark pink stripes on each petal. Requirements are largely the same as for other cactus species, and even succulent beginners can grow them well.