Oxalis oregana
redwood sorrel
O. oregano is a creeping, rhizomatous perennial with hairy, mid-green, trifoliateleaves. Solitary rose-pink, lilac or white flowers 2.5cm across are produced on slender stems from spring to autumn. Reaches 20cm in height and will spread indefinitely, naturalising in shady, woodland conditions
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Size
Ultimate height
0.1–0.5 metresTime to ultimate height
2–5 yearsUltimate spread
Wider than 8 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Purple Pink White | Green | ||
|---|---|---|---|---|
| Summer | Purple Pink White | Green | ||
| Autumn | Purple Pink White | Green | ||
| Winter |
Position
- Full shade
- Partial shade
Aspect
North–facing or East–facing or West–facing
Exposure
Sheltered Hardiness
H5Botanical details
- Family
- Oxalidaceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Matforming
- Genus
Oxalis can be annuals or perennials, with fibrous, bulbous or rhizomatous rootstocks, palmately divided leaves and funnel-shaped or bowl-shaped flowers that mostly close in dull weather and at night
- Name status
Correct
- Plant range
- Western N America
How to grow
Cultivation
Grow in moist, fertile, humus-rich soil in full or partial shade
Propagation
Propagate by division in spring; small sections of the rhizomes root readily with bottom heat
Suggested planting locations and garden types
- Cottage and informal garden
- Low Maintenance
- Flower borders and beds
- Underplanting of roses and shrubs
Pruning
No pruning required
Pests
Generally pest-free
Diseases
May be susceptible to a rust
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