Pandanus grows best in bright, dappled sunlight, so find a sunny window or give it some extra light from grow lights. In the summer, you can put the plants out on a patio or porch. Pot up your Pandan Grass in rich potting soil full of nutrients. You can add a bit of sand to the mix to be sure the soil drains well. Pandanus amaryllifolius leaves serve double duty as a spice and medicine. Leaves are used in traditional or folk medicine to relieve stomach cramps. Some gardeners soak the leaves in warm coconut oil and use it as a poultice to relieve arthritis pain.