Gleditsia triacanthos 'Rubylace'

RHS Plant Profile
thorny locust 'Rubylace'

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A spreading, deciduous tree to 8m. The leaves are elegant and frond-like, emerging dark bronze-red in spring and becoming bronze-green as the season progresses. The foliage then turns yellow in autumn before falling. Tolerant of a wide range of growing conditions

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

4-8 metres

Max Spread

4-8 metres

Size

Time to Maturity
20–50 years
Max Spread
4-8 metres
Max Height
4-8 metres

Growing Conditions

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

Position

Full sun
Aspect
East–facing or North–facing or South–facing or West–facing
Exposure
Exposed or 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)
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Fabaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Spreading branched
Genus
Gleditsia are deciduous trees with elegant, pinnate or bipinnate foliage, often on spiny branches, inconspicuous flowers followed by large flattened seed-pods
Name Status
Accepted

How to Grow

Cultivation

Grow as a specimen tree in any fertile, well-drained soil in full . See tree cultivation for further advice

Propagation

Propagate by budding in summer, or grafting in late winter

Suggested planting locations and garden types

  • Architectural

Pruning

See pruning group 1

Pests

May be susceptible to gall midge

Diseases

May be susceptible to honey fungus