Cacti showing their (almost) true colours at Huntington Gardens in San Marino, CA:
What do you think, cactus face or cactus pizza?
Tiny miracle � a beautiful pink cactus flower with ants crawling over it for good measure:
Beautiful small pink and orange flowers, captured in Sacramento, CA:
Many cactus flowers are night blooming as they get pollinated by nocturnal insects like moths or small animals like bats. Depending on the cactus species, the flower shapes can be tube-like, bell-like or wheel-shaped. Sizes range from one fifth of a centimetre to 15-30 cm.
A field of cacti or cactus soldiers?
A bit of yellow in a sea of cactus �wool� � a true winner, taken in the Peruvian Andes at an altitude of 4,000 m:
Cactus cupcakes, anyone?
A shining star among the cactus flowers:
Except for the Rhipsalis baccifera cactus species that can be found across the tropics of the world, cacti are prevalent in the Americas but with their growing popularity, have been imported all over the world. Among the most common and well-known are Prickly Pears, Barrel cacti, Saguaro cacti (featuring in most Western films), Aztekium cacti, and Echinopsis a.k.a. the hedgehog cactus that can be found as houseplants on many window sills.
The many flowers of this barrel cactus have matured into fruits that themselves seem to form a flower again