Redwood sorrel

Oxalis oregana

Photo/Illustration: 
Michelle Gervais
Photo/Illustration: 
Michelle Gervais
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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 Flower,
Purple/Lavender Flower,
White Flower
Uses
Ground Covers,
Naturalizing
Style
Woodland Garden
Seasonal Interest
Spring Interest
Type
Perennials

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