Pereskia are some of my favourite plants. At first glance, you would never guess that they belong to the Cactaceae group. But closer inspection will reveal some similarities, especially areoles and spines. Altogether there are around seventeen species, all needing a warm tropical climate to grow vigorously, and survive. The P. grandiflora is easily the most common, and regularly makes an appearance in botanical gardens. They will grow from a seed or cutting, and may produce blooms after two or three seasons. In tropical habitats, they are better off in the ground. But be careful, because they can easily grow in to trees, more than three metres tall.