Thamnocalamus crassinodus 'Langtang'

RHS Plant Profile
thamnocalamus 'Langtang'

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thamnocalamus 'Langtang' RHS
thamnocalamus 'Langtang' RHS

Synonyms

Thamnocalamus spathiflorus 'Lang Tang'

Bamboos
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'Langtang' forms a graceful, arching clump to about 4m tall. The young canes are blue-green, sometimes flushed with purple, and age to light brown with red tinges. The small, slender foliage gives a delicate effect

Position

Full sun, Partial shade

Soil Types

Loam

Max Height

2.5-4 metres

Max Spread

2.5-4 metres

Size

Time to Maturity
5–10 years
Max Spread
2.5-4 metres
Max Height
2.5-4 metres

Growing Conditions

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

Position

Full sun Partial shade
Aspect
West–facing or South–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
Poaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Genus
Thamnocalamus are graceful, vigorous, clump-forming evergreen bamboos. Thick, hollow canes may be covered by a waxy, glaucous blue-white bloom, and bear small greyish-green leaves
Name Status
Unresolved

How to Grow

Cultivation

Grow in fertile, humus-rich, moist but well-drained soil, in full sun or partial shade. Protect from cold drying winds. In a container grow in a peat-free, loam-based compost and feed with a balanced liquid fertiliser monthly during the growing season. See bamboo cultivation

Propagation

Propagate by division in spring

Suggested planting locations and garden types

  • Architectural
  • Patio and container plants
  • Low Maintenance
  • Hedging and screens

Pruning

Remove weak, dead, damaged or spindly stems in spring and thin to show off stems to best effect

Pests

May be susceptible to slugs

Diseases

Generally disease-free