Outsidepride Amaranthus Illumination - 5000 Seeds Amaranthus Illumination grows as an annual in USDA Zones: 3 - 10. This ornamental plant loves to be in full sun and is heat resistant. These heirloom seeds are great for planting in flower gardens as a contrast to other foliage plants. Amaranthus Bicolor, also known as Summer Poinsettia reaches a height of 24 inches tall. Each tall, sturdy column has bright green leaves that change into orange-scarlet leaves with yellow centers. Sow these easy to grow seeds at 4 seeds per plant and keep moist until germination occurs. Our seeds are always Non-GMO and packaged for the current year.