Annual Flowers That Do Well in Direct Sun petunia. ageratum. salvia. moss rose. sunflower. zinnia. marigold. geranium. Click to see full answer. Considering this, what flowers are best for pots in full sun? The Best Flowers for Pots in Full Sun Diamond Frost Euphorbia. When you plant Diamond Frost euphorbia, you’re planting one of the most award-winning plants ever developed. Mandevilla Vine. Grow a touch of the tropics with bright mandevilla vine. Supertunia Petunia. Bolivian Begonia. Summer Snapdragon. Geranium. Scaevola. Lantana. Also Know, what plant can withstand the most heat? 7 Heat-Tolerant Plants that Love the Sun Lantana. Lemon Verbena. Cosmos. Marigold. Geranium. Salvia. Sedum. Also to know is, what perennials grow best in full sun? 14 Sun Loving Perennials Anyone Can Grow Blanket Flower. Blanket flower (Gaillardia) offers red-and-yellow flowers that exude color and charm. Salvia. Coreopsis. Purple Coneflower. Delphinium. Black-Eyed Susan. Sedum. Dianthus. What are full sun flowers?When you read “full sun,” it means that a plant needs direct, unfiltered sunlight for at least 6 hours a day. This is the minimum amount of light a sun-loving plant needs to thrive. As you have noticed, the intensity of sunlight varies depending on the time of day.