You Will Get 5 Seeds Cananga Odorata Ylang Ylang. Fragrant Flowers. It is a beautiful shrub or small tree that gets great glossy evergreen foliage and large fragrant yellow flowers.. These beautiful plants are only hardy to USDA zone 10, although they also make good houseplants and they grow best in full sun to part shade.. They would make excellent additions to your rare plant collection, or just make a unique statement in your yard.