There are at least a half dozen Opuntias in bud or bloom now. The flowers are beautiful in shades of red, orange, yellow, salmon, purple and other color variations. The plants are wicked! Some have spines that are tiny and float in the air when the plant is bumped, such as Opuntia microdasys. Cholla cactus which looks like Opuntia, with 1" to 2" spines, was included in the genus Opuntia, but has been reclassified as a separate genus, Cylindropuntia. The spines continue to be barbed and vicious, even though they're not still, technically, "Opuntia."