For those in USDA hardiness zone 8, many summer blooming flowers work well in the garden or landscape. The zone boasts a warm summer and mild winters so plants can live in a moderate environment. The minimum average temperature for this zone is 10 to 15 degrees F. Zone 8 includes areas in Georgia, Texas and Florida.
The common periwinkle has also been known as lesser periwinkle, creeping myrtle and Vinca minor. From the dogbane family, it is an evergreen perennial vine that is fast-growing and easy to grow. It gets 4 to 8 inches tall. The evergreen leaves are 2 inches long. The funnel-like flowers are 1 inch wide and colors depend on the cultivar. It is hardy in USDA hardiness zones 4 through 9. Propagate via division in moist soil and partial to full shade in zone 8.
The purpletop verbena has been known as tall verbena, purpletop vervain, and Verbena bonariensis. From the verbena family, it is an easy-to-grow, fast growing perennial. It grows 3 to 6 feet high and 1 to 3 feet wide. The leaves are 3 to 5 inches long. The flowers are in clusters 2 to 3 inches wide. Blooms will be from summer to fall. It is hardy in USDA hardiness zones 7 through 11. Propagate via seed, cuttings, or division in full sun or partial shade.
The montbretia has been called crocosmia or Crocosmia x crocosmiiflora. From the iris family, it is a fast-growing, easy-to-grow perennial. The pale green leaves are 2 to 3 inches long. The funnel-like flowers are 2 inches wide and yellow, red or orange. It is hardy in USDA hardiness zones 6 through 9. Propagate via offsets in moist, well-drained soil with full sun or light shade.
The butterfly blue has been called small scabious or Scabiosa columbaria. From the sundew family, it is a fragrant, easy-to-grow perennial that attracts butterflies. It grows 2 feet high and 3 feet wide. The grayish-green leaves are hairy and 2 to 6 inches long. The flowers are 1 ½ inches wide and colors vary depending on cultivar. It is hardy in USDA hardiness zones 4 through 10. Propagate via seed, division, or cuttings in full sun and a well-drained soil.