Flower Seeds for Planting 1,400+ Non GMO Cape Forget Me Not Seeds Low Maintenance Evergreen Climbing Plants In pea plants, purple flowers are dominant over white flowers. Two plants, both heterozygous for the gene that controls flower color, are crossed. What percentage of their offspring will have purple flowers? These Asters are popping open to enjoy the cooler temperatures! Stop by our perennials department to learn more about our different varieties of Aster Varieties pictured below: Magic Pink Aster Purple Overview of photosynthetic pathways (C3, C4, and CAM): In C plants, Download Scientific Diagram