Water spinach is an easy to grow herbaceous aquatic or semi-aquatic annual that can be propagated through seeds, or cuttings if they are available. Stem cuttings can be rooted in water or moist sand and transplanted into pots of fertile potting soil mixture and placed in a sunny location. These plants relish heat, humidity, water, and nutrients. Water spinach does not grow well below 70° F. Some varieties will also thrive in water. Once established, cutting may be made at any time. Like the related sweet potato, the stems have a white latex, and only the youngest, fastest growing tips are harvested for cooking. The less suitable the growing conditions, the tougher and latexy the greens will be.