5 CARDAMON CARDAMOM Alpinia Oxyphylla HERB Flower Shrub Tree Seeds BLOOM TIME: Spring HARDINESS ZONE: 10 - 11 PLANT HEIGHT: 36" to 10 Feet . . . PLANT SPACING: 36 - 60" LIGHT REQUIREMENTS: Sun - Part Shade . . . SOIL / WATER: Average Cardamon is a tropical plant originally from Indian that is grown for its foliage and seed pods. The seed pods are the source of the Cardamon Spice, the 3rd most expensive spice in the world. While it is not very cold hardy, it does do very well grown in containers as a houseplant and has fragrant glossy leaves that make it a joy to have indoors.