Typha laxmannii

RHS Plant Profile
Laxmann's bulrush

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Synonyms

Typha stenophylla

Aquatic Herbaceous Perennial Grass Like
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A very robust, deciduous perennial with long, slender grey-green leaves. Upright growth to a height of 1.5m with 'bulrush' green-yellow flowers in summer, turning brown later. May become a nuisance in some gardens

Position

Full sun

Soil Types

Clay, Loam

Max Height

1-1.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
2–5 years
Max Spread
1-1.5 metres
Max Height
1-1.5 metres

Growing Conditions

Clay Loam
Moisture
Poorly–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
West–facing or South–facing or East–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
Typhaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Submerged, Tufted
Genus
Typha are deciduous, rhizomatous perennials from marginal aquatic habitats, with long strap-shaped leaves and characteristic dark brown, cylindrical flower spikes in summer
Name Status
Correct

How to Grow

Cultivation

Plant in fertile, boggy soil or pond margins at up to 30cm water depth in a sunny spot. Root system may puncture pond liners and, in shallower water, may spread rapidly with the potential to become a nuisance if not managed well. See pond plants and bog gardens for further advice

Propagation

Propagate by division in spring

Suggested planting locations and garden types

  • Wildlife gardens
  • Cut flowers

Pruning

Remove dead leaves and old flower stems before the onset of new growth in spring

Pests

Generally pest-free

Diseases

Generally disease-free