Costus igneus, Chamaecostus cuspidatus - Insulin Plant, Fiery Costus, Spiral Flag. It is known as the insulin plant because it may help lower glucose levels for some people with diabetes. Researchers believe it can help lower blood sugar level. The plant has large, fleshy, smooth turmeric-like spiral leaves that are dark green on top with light purple undersides. The undersides of these large, smooth, dark green leaves have light purple shade. The leaves are spirally arranged around the stem, forming attractive, arching clumps arising from underground rootstocks. The maximum height of these plants is about two feet. The flowers are orange in color, appear to be cone-like heads at the tips of branches. Flowering occurs during the warm months. 10 benefits of insulin plant: - Helps to reduce high blood glucose level - Improves digestion - Reduces cholesterol level - Increases energy level - Promotes weight loss - Good for skin health - Prevents heart diseases - Relieves stress.