Yellow flowers of the prickly pear cactus (Opuntia), at Fullerton Botanical Garden, are vibrant, waxy, cup-shaped blossoms that typically measure 2 to 4 inches in diameter and bloom from late spring through mid-summer. These striking desert blooms emerge singly or in small groups from the upper curved edges of the plant’s flattened, green pads.

Blooming Prickly Pear Cactus

Yellow Flowers of Prickly Pear Cactus