Outsidepride Amaranthus Perfecta - 5000 Seeds Amaranthus Perfecta grows as an annual in USDA Zones: 3 - 10. This ornamental plant loves to be in full and is heat resistant. These heirloom seeds are great for flower gardens as a contrast to other foliage plants. Amaranthus Tricolor, also known as Summer Poinsettia reaches 24 inches in height and has bright green, yellow, and red leaves. 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.