Carex uncinata 'Rubra'

RHS Plant Profile
hook sedge 'Rubra'

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Synonyms

Uncinia uncinata rubra, Uncinia uncinata 'Rubra'

Grass Like
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Densely-tufted, evergreen perennial, about 25cm tall, with upright, mahogany-red grass-like leaves. Dark brown flowers in narrow spikes, 15cm long, in mid and late summer

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

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

Position

Full sun Partial shade
Aspect
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)
H3

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Cyperaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Tufted
Genus
Carex can be deciduous or evergreen, rhizomatous or tufted perennials, with triangular stems bearing linear or strap-shaped leaves and short or long spikes of tiny green or brown flowers
Name Status
Unresolved

How to Grow

Cultivation

Grow in sun or light shade in moist, but well-drained soil, or in a cold greenhouse in colder and northern areas of the UK

Propagation

Propagate by division between late spring and midsummer

Suggested planting locations and garden types

  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Gravel garden
  • Mediterranean climate plants
  • Patio and container plants
  • Rock garden
  • Low Maintenance
  • Flower borders and beds
  • Garden edging
  • Conservatory and greenhouse

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free