A Cactus, plural of which is Cacti, is an excellent indoor plant that requires very little care and thrives in low household humidity. Cacti are native to the Americas especially Mexico, southern Argentina, and Bolivia. The distinctive look of a Cactus is the result of trying to adapt to very hot dry areas where it was necessary to conserve water. The leaves turned into spines and the stem became succulentLearn how to grow and care for succulent plants at Houseplant411.com and photosynthetic. The spines protect the plant from herbivores and help cool the plant. The spines grow out of areoles which correspond to nodes on other plants. There are hundreds of different sizes, shapes, and varieties of Cacti to choose from, many of which produce large beautiful flowers.
These plants are considered poisonous and should be kept away from pets and children. Read more about common houseplants that are poisonous in Don’t Feed Me To Your Cat! A Guide to Poisonous Houseplants