Hedgehog cactus

Hedgehog cactus may refer to:
 * Pediocactus, a genus of cacti containing 6-11 species
 * Echinocereus, a genus of ribbed, usually small to medium-sized cylindrical cacti, comprising about 70 species from the southern United States and Mexico in very sunny rocky places
 * Echinopsis, a large genus of cacti native to South America containing 128 species