Cactus outdoor garden design can bestow a Southwestern feel on your landscape. If you live in a warm climate, cactus outdoor garden design may be commonly found in backyards and courtyards. Like flower gardens, these garden design feature limitless possibilities and add a sense of serenity and beauty to their surroundings. Creation of cactus outdoor garden design basically involves regional collection of succulents and cacti, which are grouped by specific genera and growth forms. While treading through the cactus garden design , an individual would be able to witness dozens of species. Popular groups include the ferocactus, Opuntias, Echinocereus, Mamillaries, agaves and columnar Cacti.