Hamatocactus setispinus

A common name includes Hedgehog cactus. Flower: Yellow, with a deep red center. Blooming season: Summer to Fall. Cultivation and propagation: This species is easy and well worth growing. It requires little care once they have reached a nice flowering size. Thelocactus setispinus is suited for any rich, well-drained soil in full sun throughout the year (but does better with some light shade in the summer). This plant needs plenty of water (indicatively to about once a week). Avoid wetting the bodies of these plants while they are in sunlight. A wet cactus in the sunlight can cause sun burning which can lead to scars or even fungal infections and death. Frost tolerance: In winter keep completely dry at 5°C this usually aids in maintaining a healthier plant, but it is hardy as less as -12 to -7°C depending on the origin. Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz