Oxalis enneaphylla 'Sheffield Swan'

RHS Plant Profile
scurvy grass 'Sheffield Swan'

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scurvy grass 'Sheffield Swan' RHS 1999

Synonyms

Oxalis 'Sheffield Swan'

Bulbs Alpine Rockery
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'Sheffield Swan' is a compact rhizomatous perennial with rounded, pleated, blue-green leaves composed of several narrow leaflets, and widely funnel-shaped white flowers 2cm across, with a pale green eye, opening in late spring and early summer

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

Up to 10 cm

Max Spread

0-0.1 metre

Size

Time to Maturity
2–5 years
Max Spread
0-0.1 metre
Max Height
Up to 10 cm

Growing Conditions

Chalk Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–facing or West–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)
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Oxalidaceae
Native to GB/Ireland
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
Accepted

How to Grow

Cultivation

Grow in moderately fertile, humus-rich, well-drained 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