Plus SAVE 20% when you buy any 3 plants combination. Although it isn’t an everyday occurrence, winters in zone 7 can be as cold as 0 to 10 F (-18 to -12 C), so it’s important to keep this possibility in mind when selecting flowers for zone 7. Bloom-A-Thon® Pink Double Reblooming Azalea Zone 7 Perennials In order to make shopping for your garden easier, we have gathered all of the perennials we offer for hardiness zone 7 here. If you aren't sure about your hardiness zone, click on the link under the search box that says FIND HARDINESS ZONE, and enter your zip code. Growing Flowers in Zone 7. It grows 10-15 feet tall and spreads around 6-8 feet. And the category of plants that prefer full sun is vast. Read on to learn more about the best types of zone 7 flowers. Visit reputable garden centers and nurseries to find popular and well-suited perennials for your particular region within zone 7. It responds well to pruning so you can keep it contained in smaller spaces, or hedge it. While some plants wither in direct sunlight, many sun-loving perennials thrive in these conditions. Portions of eastern coastal areas are also able to sustain zone 7 perennial plants. The Tea Olive prefers well-draining soil in full sun to part shade. A planting location is considered to have full sun if it gets at least six hours of direct sunlight on most days. Select from an extensive offering of perennials that thrive in full sun. Achillea Agapanthus Agastaches Alliums Alstroemeria Amsonia Anemone Asclepias Asters Astilbe Astrantia Baby's Breath ... Full Sun Perennials. 4. Give it a go in zones 7 to 11. Azalea. zone 7-8 (418) zone 9-10 (250) Perennials View all Perennials. West of Texas, smaller belts of zone 7 are located in New Mexico, California and up into Oregon and Washington.