1, the morphology of cactus and some structures of epidermis greatly reduce their transpiration. Their epidermis has a thick cuticle, and many kinds of epidermis are coated with wax.

2. Rich nutrition: In addition to many nutrients, cactus contains more than 10,000 kinds of plant nutrients.

3, tenacious vitality: cactus has a particularly strong "willpower" to survive, even a cactus that leaves the mother plant can reproduce asexually. Cactus can survive for five or six years without water or soil.

4. The stem of cactus is thick and juicy, and there are developed parenchyma cells to store rich water.

5. Cactus has many branches and huge roots, which can absorb little rain.