Flowers that you plant once and enjoy season after growing season are called perennials. Some perennials are flowering plants and can be grown in a garden or landscape to bring yearly bloom and color to the yard.
The Shasta daisy, Leucanthemum x superbum, is a perennial from the aster/daisy family. It gets 2 to 3 feet high and 1½ feet wide. It has white ray flowers 2 to 5 inches wide and dark green leaves 8 to 12 inches long. Leaves are basal, being at the base of the stem, and thick. Grow Shasta daisy in well-drained limey soil in full sun or partial shade. Propagate via seed or division in USDA hardiness zones 5 to 9.
The aloe vera plant, Aloe vera, is a perennial from the lily family that is evergreen and drought-tolerant. Leaves are succulent, grayish-green, and up to 18 inches long. There are tiny yellow flowers in winter on a 3-foot tall stalk. Grow aloe vera in full sun or partial shade in well-drained soil. Propagate via the offsets in USDA hardiness zones 8 to 11.
The common snapdragon, Antirrhinum majus, is a perennial from the figwort family that is fast and easy to grow. These range in size from 3 feet tall down to 4 inches. Size, color and type of bloom depend on the cultivar. Flowers are tubular. Grow a snapdragon in well-drained soil in full sun or partial shade. Propagate via seed in USDA hardiness zones 4 to 11.
The caladium, Caladium bicolor, is a perennial from the alum family. It gets 2 feet high and 2 feet wide with leaves 6 to 14 inches long. Colors, shapes and sizes of leaves will depend on the cultivars. Grow a caladium in well-drained rich soil, slightly acidic, in full shade to partial shade. Propagate via tuber division or seed in USDA hardiness zones 9 to 12.
The purple coneflower, Echinaceae purpurea, is a perennial from the aster/daisy family that is also quick and easy to grow. It gets 3 feet tall and 3 feet wide with coarse dark green leaves 3 to 8 inches long. Flowers are 3 inches wide, purple and daisy-like. Grow purple coneflower in full sun or partial sun. Propagate via seed or root division in USDA hardiness zones 3 to 9.
The strawberry, Fragaria x ananassa, is a perennial from the rose family. It gets up to 6 inches tall with white or pink flowers and red fleshy fruits. Size of the fruits is dependent on cultivars. Grow a strawberry plant in sandy soils in full sun. Propagate via plantlets on the runner's ends in USDA hardiness zones 2 to 11.