huge flowers on trichocereus cactus

apple barbed beauty bertha big bloom blooming blooms blossom blossoms botanical botany bud cactaceae cacti cactus cholla close closeup color colorful desert detail elaborate flora floral flower flowering flowers fruit garden green growth hedgehog huge leaf macro natural nature nectar needles orange pattern pear petal petals pistil plant pollen prickly pricklypear purple red saguaro sharp southwest spike spine spines spiny stamen stem sticker succulent thorn thorns thorny trichocereus usa variety yellow