Moonflower seed pod. The seed pod becomes covered with sharp spikes as it matures. These cannot be left on the plant or it will stop putting out new blooms. If you allow Complete Guide to Creating a Garden of Perennial Succulents Cactus en Ligne The Crossword Garden, Part One: 10 Plants You Should Know The New York Times Starfish Cactus (Stapelia orbea variegata) Green Thumb Nursery 12 Types of Lilies to Grow in Your Garden UrbanStems An Insider's Guide to Getting First Dibs on the Best Ikea Houseplants Gardenista