Pencil Cactus is known as a low maintenance plant, and is relatively easy to take care of if you keep it under the proper conditions. Water on a limited basis, particularly in the winter months when natural growth slows down. One of the most common is overwatering, since the plant has a natural reserve of water in the stems. Prune occasionally to keep plants in check for size and make them more full but always wear protective gloves. A single or double application of a diluted succulent fertilizer during the growing season can help promote healthy growth. Additional rotation of plants indoors will also help to keep them growing evenly and avoid leaning toward the sun. Know more about pencil cactus plant