Pig's ear is succulent that grows in thick, oval leaves with red edges. Desert cacti have transferred photosynthesis from the leaves to its stem to help reduce moisture loss that would naturally happen through the stomata. Even though it can tolerate low light, little watering and a lot of light, it still needs to be exposed to light when it dries out. You should repot any plant that is showing signs of rot root problems or looking duller than usual. When you can learn how to water succulents without drainage, they will be able grow for a long period of time.