This stamp booklet celebrates the beauty of cacti, flowering perennial succulents that are abundant in the Southwest and other parts of the world. Most cacti grow very slowly and are tough, adaptable and low maintenance.
Cactus flowers are often large and flamboyant, with colors of white, red, pink, orange or yellow. Some flowers are also richly scented, and the nectar and colors attract pollinators such as bats, bees and birds.
These stamps celebrate the beauty of the cactus flower; each stamp features a photograph of one of these ten cacti flowers:

- Opuntia engelmannii,
- Rebutia minuscula,
- Echinocereus dasyacanthus,
- Echinocereus poselgeri,
- Echinocereus coccineus,
- Pelecyphora aselliformis,
- Parodia microsperma,
- Echinocactus horizonthalonius,
- Thelocactus heterochromus, and
- Parodia scopa

This thick cactus has a green body, with strong red/amber spines. During the spring it produces magenta flowers with a reddish throat in spring.