This native plant (Opuntia basiliaris), "beavertail cactus" is very popular in landscapes and public plantings too. The large flowers are an incredibly bright magenta pink and occur in early spring. So beautiful!
"Thank you Clare. This past year was the first year that I've seen more than three Monarch's visiting the garden. They seemed to favor the Buddleia's, Zinnia's, and Mexican Sunflowers over everything else."