Redwood Sorrel (Oxalis oregana)

Redwood Sorrel

Oxalis oregana 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 an excellent groundcover and a good substitute for English ivy.

Key Features

• Native to the Northwestern U.S. and California.
• Long‑blooming; attractive shamrock foliage.
• Spreads by runners; good groundcover for shade.

Growing Conditions

Moist, fertile, humus‑rich soil in full or part shade.

Care & Propagation

Sow seed at 55–64°F in late winter/early spring. Divide in spring; small sections root easily with bottom heat. Problems: rust, seed smut, powdery mildew, fungal leaf spots, leaf miners, spider mites.

Landscape Uses

Ground covers, naturalizing; woodland garden style.

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