Redwood sorrel (Oxalis oregana) Genus:  Oxalis Redwood sorrel is a creeping native perennial with shamrock-shaped leaves and cup-shaped pink, lilac, or white flowers over a long period from spring to fall. It makes a nice groundcover. Noteworthy Characteristics:  Native to the Northwestern U.S. and California. Long-blooming. Attractive shamrock-shaped leaves. Good substitute for English ivy ( Hedera helix ). Care:  Grow in moist, fertile, humus-rich soil in full or part shade. Propagation:  Sow seed at 55° to 64°F in late winter or early spring. Divide in spring. Small sections root easily if provided with bottom heat. Problems:  Rust, seed smut, powdery mildew, and fungal leaf spots are common, while leaf miners and spider mites are less common.

Overview

Height 6 in. to 12 in. Growth Habit Runs Growth Pace Moderate Grower Light Part Shade to Full Shade Moisture Medium Moisture Maintenance Moderate Characteristics Native, Showy Foliage Bloom Time Fall, Spring, Summer Flower Color Pink, Purple, White Uses Ground Covers, Naturalizing Style Woodland Garden Seasonal Interest Spring Interest Type Perennials