The night-blooming cereus (Peniocereus greggii) belongs to Cactaceae (the Cactus family). It is an evergreen perennial herbacious plant that is distributed Arizona, south into Sonora, north Mexico. This cactus grows in arid areas and can reach 0.3-3 m in height. Stems are columnar, grayish green, 1.2-2.5 cm in diameter and have 4-6 ribs. Areoles are elliptic and set closely. Central spines are 1-2, blackish and radial spines are 6-9. White flowers are up to 10 cm, and bloom at night in June. Bloom is lasting only one night with strong scented.