48 varieties of Cacti from the state of Arizona, state 48. Coincidence? Not when you consider that Arizona has more native cacti than any other state in the USA. Cacti are the tough guys in the plant world. Ours are even tougher because they grow in our super hot Arizona summers. As the world warms up and water becomes more precious, this drought-tolerant plant is in high demand. Cacti grows slowly, but good things come to those who wait.