Bulbous perennial of the Iridaceae family, this cultivar of Crocus chrysanthus shares the Balkan and Anatolian origins of the type species, naturally present on the rocky grasslands and open slopes of the mountains of Southeast Europe and Turkey. 'Saturnus' is an old Dutch horticultural selection, whose name evokes the ringed planet, perhaps in reference to the circular markings adorning its tepals.
The flowers are distinguished by a particularly contrasting coloration: the inner tepals are a bright and luminous yellow, while the outer tepals display on their dorsal side a yellow background traversed by purple-violet to dark purple streaks and flames, which fade towards the edges. This striped and dark outer attire opens onto an entirely yellow interior, creating a surprise effect with each bloom. The stamens are yellow, the stigmas are cut orange. The foliage is narrow, linear, dark green with the typical white median line of the genus.
In its natural habitat, the species blooms from February to April depending on altitude. In cultivation, 'Saturnus' blooms from February to March.
Like all crocuses of this group, it requires perfect drainage, a sunny exposure, and a dry summer rest to ensure the longevity and multiplication of the corms. Rock gardens, troughs, and mineral borders suit it perfectly.