“Moon Cactus” is an excellent subject for windowsill culture. It requires porous cactus soil with adequate drainage and prefers filtered light or shade with ample airflow. Water thoroughly when soil is dry to the touch and protect from frost.
Be careful not to over-water your plant; this can cause rotting of the root system, and your plant will die. On the other hand, don’t allow the plant to dry out too much because this can cause the root system to collapse and become unable to take up water.