Amaranthus is an annual that goes by names such as Love-Lies-Bleeding and Summer Poinsettia as its deep red flowers resemble that holiday favorite. They grow up to 5 feet tall and make a dramatic statement in a flower border. This flower is native to India where they thrive in warm summer temperatures. They are tolerant of hot, dry soil and the colors are more intense when the soil is not as nutrient rich. They can also be dried and used in flower arrangements as well.