tall are generally learned cactus
star_cactus is cactus. rainbow_cactus is cactus. key_tree_cactus is cactus. saguaro is cactus. lee_pincushion_cactus is cactus. toothpick_cactus is cactus. christmas_cactus is cactus. san_rafael_cactus is cactus. siler_pincushion_cactus is cactus.