The cactus stem nodes are oval or round, thick and fleshy, and the tender stems are emerald green. In northern areas, they are mostly used as potted plants to decorate balconies and rooms. In warm areas, they can be planted in the open to form natural landscapes or green courtyards.

The stomata on the fleshy stems of the cactus are closed during the day and open at night. They absorb carbon dioxide and produce oxygen at the same time. They have a particularly strong ability to purify the air and increase the concentration of negative ions in the indoor air, which is very beneficial to human health. Cacti can secrete phytoncides, which can inhibit harmful bacteria.