Green desert plants are usually referred to as cacti or succulent plants. This class of plants includes cacti and others such as aloe veras and jades. They all retain water in their foliage and are almost always green in color. While green desert plants are easy to care for, the biggest cause of their failure is improper watering, usually overwatering. For this reason, as a general rule, it is wise to err on the side of less water than more water.
Allow the soil to dry out between waterings during all seasons of the year. Test the moisture with a moisture meter or your finger. Be careful not to disturb the roots.
Water outdoor green desert plants well with about 2 inches of water during the growing season. Give plants in containers water until it begins to drip out the bottom of the container. Don't leave standing water in the container's tray or saucer.
Water green desert plants only when the soil dries out, giving the plant just enough water to dampen the soil (usually about 1 or 2 cups), but this depends on the size of the plant and pot.
Prepare the green desert plants for the growing and dormant stages. Increase the amount of water your plants get in the winter until you are thoroughly watering them for their growing stage, usually about 25 percent more each time. Reverse the process, slowly decreasing the amount of water your plants get until you are watering them with about 1 to 2 cups for their dormant stage. Allow the soil to dry out between all waterings.