Why are cacti not afraid of drought?

1. Huge root system

The root system of cactus is very developed. It can not only penetrate deep into the ground, but also spread and grow around. The roots of some varieties can grow to dozens of meters long and penetrate deep into the ground to obtain groundwater. In addition, its root system is relatively thick and firmly rooted, which can ensure that it will not be unable to absorb water due to root problems.

2. Needle-shaped leaves

Its leaves are needle-shaped, which is due to its degeneration in order to adapt to the long-term water-deficient living environment. The needle-shaped leaves are very small, which can effectively reduce water evaporation and help the plant retain more water.

3. Waxy stem

There is a layer of wax on the surface of its stem, which protects it from being sunburned and dehydrated. In addition, this layer of wax can slow down the evaporation of water in the plant and help it resist drought.