Narrow-Leaf Cinnamon Ginger. The plant is a low mounding ginger with glossy leaves, and amazingly fragrant foliage. Gently brushing the leaves is all it takes to release a spicy cardamom-like aroma. Rhizomes are ginger-scented with a touch of Cinnamon. The flowers are quite beautiful, and resemble those of shell ginger to which it is closely related. In a shady tropical garden, the glossy dense foliage is lush and beautiful. Hardy to zone 7, it is very easy to grow, and will grow from a small rhizome division into an enormous specimen in just a couple of years. If not protected from freezes, it will die back to the ground, but it will re-emerge from the rhizomes in the Spring, as long as the ground doesn't freeze. Southeast Asian medicinal plant used to control hypertension, as diuretic, antifungal, and antiulcer. In Japan it is used as food preservative.