Oxalis articulata

RHS Plant Profile

pink sorrel

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Synonyms

Oxalis articulata 'Rosea'
Oxalis floribunda misapplied

Herbaceous Perennial

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A rhizomatous, clump-forming, deciduous perennial up to 45cm tall in flower, with green, clover-like, three-lobed leaves on long stalks and masses of bright pink flowers in umbels on long flower stems, through the summer

Position

Full sun, Partial shade

Soil Types

Loam, Sand, Chalk

Max Height

0.1-0.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.5-1 metres
Max Height: 0.1-0.5 metres

Growing Conditions

Loam Sand Chalk

Moisture: Moist but well–drained or Well–drained
pH: Acid or Neutral or Alkaline

Position

Full sun Partial shade

Aspect: East–facing or South–facing or West–facing
Exposure: Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H4

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Oxalidaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Clump forming
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: E C South America

How to Grow

Cultivation

Grow in moderately fertile, humus-rich, well-drained soil in full sun. Grows best in light or disturbed, acid soils. Can also be grown in a container in an alpine house

Propagation

Propagate by division in spring; small sections of rhizome root easily with bottom heat or from seed

Suggested planting locations and garden types

Cottage and informal garden
Patio and container plants
Rock garden

Pruning

No pruning required

Pests

May be susceptible to slugs and snails outdoors

Diseases

May be susceptible to rust diseases