Many flower varieties flourish in fully shady areas, such as besides buildings or underneath tree canopies. Soils in fully shady locations typically have moisture-retentive soils that remain wet even during long dry spells. Many gardeners plant full shade flowers in containers that can be easily moved to keep the plants out of direct sunlight. Various perennial plants thrive in fully shady locations.
Cape primrose (Streptocarpus), an herbaceous perennial in the Gesneriaceae plant family, requires humusy, moist soils in full shade positions. Native to South Africa, the cape primrose grows well in United States Department of Agriculture (USDA) Hardiness Zones 10 to 11. This plant reaches about 18 inches high with similar spreads. The cape primrose features crinkled leaves, upright stems and flowers with blue, dark pink, purple or white petals. Botrytis mold, spider mites and chlorosis occasionally affect this plant. The cape primrose works well in containers and hanging baskets.
Eastern Round-Leaved Violet
The eastern round-leaved violet (Viola rotundifolia) belongs to the Violaceae plant family. Winter hardy in USDA Zones 3 to 7, this plant grows best in areas with cooler summer weather. The eastern round-leaved violet prefers moist, humus-laden soils in fully shady locations. This stemless plant reaches only about 3 to 6 inches in height and 6 to 9 inches in width. Yellow and bronze flowers bloom in March and April. The delicate foliage often wilts in the summer. Eastern round-leaved violets work well in shady areas of wildflower and woodland gardens.
The wood lily (Trillium luteum), sometimes called the yellow trillium, belongs to the Liliaceae plant family. Native to the Southeastern United States (U.S.), the wood lily typically grows well in USDA Hardiness Zones 4 to 8. This clump-forming plant matures to about 18 inches in height and spread. Wood lilies prefer humus-laden, moist soils in fully shady locations. The lemon-scented, yellow flowers bloom in April and May. Gardeners often mass plant wood lilies in shady areas of woodland and wildflower gardens.
Solomon's seal (Polygonatum biflorum), an herbaceous perennial in the Liliaceae family, naturally occurs in the Eastern United States and Southern Canada. Winter hardy in USDA zones 3 to 8, this plant reaches between 1 and 3 feet in height and 12 to 18 inches in width. Green-white to green-yellow flowers bloom in April and May, followed by dark bluish-black fruits that ripen in the fall. This plant prefers humus-rich, wet soils in partly to fully shady locations. The Solomon's seal grows well in shaded areas of woodland, rock and wild gardens.
The spotted deadnettle (Lamium maculatum), a member of the mint family (Lamiaceae), grows well in USDA Zones 3 to 8. This mat-forming plant only reaches about 6 inches high, but spreads out 1 to 2 feet. Light pink flowers bloom from May through July. The spotted deadnettle prefers moist, loamy soils and can handle fully shady planting sites. Leaf blight, crown rot and aphids sometimes affect this plant. Gardeners often use spotted deadnettle as ground covers in shady garden areas.