What are succulents? Succulents are plants that store water in their leaves, stems, and even roots. It also gives them a more swollen, or fleshy appearance. In fact, the term succulence is specifically given to these plants for this ability. We can also typically determine a plants ability to store water by the succulence of their leaves. The fatter, or more succulent the leaves, the longer they are able to go without water. Take notice on your succulents, which ones tend to like more, or less water, and the shape of their leaves. Most echeveria, not all, tend to have rather succulent leaves. The EcheveriaAgavoides ‘Lipstick’ above is a great example of a succulent succulent.