When a cactus does not have enough water, the body of the plant begins to shrivel and become soft.
At the same time, a cactus that is in too wet soil will often look similar.
This happens because its roots are damaged and rotting, and therefore they cannot transport water.
The plant's body, not receiving enough water, begins to wither and dry out.
The best way to know about soil moisture is with a moisture meter.
You need to water the cactus when the soil is completely dry.
Watering should be thorough and abundant, so that good drainage comes out of the drainage holes.
The plant needs to be left in the water for several hours so that it absorbs a sufficient amount of water.
This will ensure that all the cactus roots are kept moist.
After heavy watering, the cactus will not require water until the soil is completely dry.
