The correct way to addess two or more cactus plants. Addressing them as cacti is no longer acceptable as upon hearing this the cactuses feel unloved; cactuses like to be treated as individuals.
When you get a shirt that has the same cactus repeated all over the shirt. If the shirt has multiple species of cactus then the appropriate term would be cacti.
The correct and formal plural of cactus. While people often believe that the proper plural is ‘cacti’ they are actually wrong. The grammatically correct word is ‘cactuses’.