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BulbsAlpine Rockery

Oxalis 'Gwen McBride'

sorrel 'Gwen McBride'

A rhizomatous perennial producing a low clump or mat of grey-green, pleated leaves with nine leaflets. The flowers, produced in late spring and early summer, are pale pink, heavily veined in dark purple-pink

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Ultimate height

Up to 10cm

Time to ultimate height

2–5 years

Ultimate spread

0–0.1 metre

Chalk

Loam

Sand

Moisture

Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

West–facing or South–facing

Exposure

Exposed

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)

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: Accepted

How to grow

Cultivation

Grow in moderately fertile, humus-rich, well-drained soil in full sun. Can also be grown in a container in an alpine house

Propagation

Propagate by division in spring; small sections of the rhizomes root readily with bottom heat

Suggested planting locations and garden types

Patio and container plants
Rock garden
Cottage and informal garden
Ground cover

Pruning

No pruning required

Pests

May be susceptible to slugs and snails

Diseases

May be susceptible to a rust

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