Senecio Stapeliiformis Also known as Pickle Cactus, this hardy succulent has tall upright cylindrical stems. The nickname Pickle comes from the markings on the stems which resemble little pickles or cucumbers! How to care for your Senecio – Senecio likes bright light, with some direct sunlight, and can survive long periods without water. Water from the bottom, using a saucer, once every fortnight watering too often can increase the chances of root rot. If planted in a pot with no drainage holes, simply mist thoroughly. TOXIC TO CATS & DOGS