One of the most popular is the eastern prickly pear cactus (Opuntia humifusa), known for its vibrant yellow blooms that ...

This is the kind of cactus you don't want to get too close to—unless you're prepared to start picking barbs out of your clothes. When prickly pear blooms, it produces pink or yellow flowers ...

The Cape Sable thoroughwort, Florida semaphore cactus ... flowers. Finally, the aboriginal prickly apple is the tallest of all three plants, its cylindrical stems with ridged, column-like branches ...