• AGM plants

    AGM plants have been through a rigourous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Calamagrostis × acutiflora 'Karl Foerster'

Feather reed-grass 'Karl Foerster'

Feather reed-grass 'Karl Foerster'

© � RHS 1997

  • Other common names Feather reed-grass 'Karl Foerster'

  • Synonyms Calamagrostis 'Stricta'

  • Genus Calamagrostis are robust rhizomatous perennial grasses, forming tufts of linear leaves, with erect stems bearing dense branching flowering panicles in summer

  • Family Poaceae / Poaceae

  • Species 'Karl Foerster' is a clump-forming deciduous perennial grass with flat, arching leaves to 90cm in length, and bronze flowering panicles that fade to pale brown

Characteristics

  • Foliage Deciduous

  • Habit Tufted

Colour

Sunlight

  • Full Sun

  • Partial Shade

  • Aspect South-facing or North-facing or West-facing or East-facing

  • Exposure Exposed or Sheltered

Soil

  • Chalk

    Loam

  • Chalk

    Chalk

  • Chalk

    Sand

  • Chalk

    Clay

  • MoistureWell-drained, Moist but well-drained

  • SoilLoam, Chalk, Sand, Clay

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height

    1-1.5 metres

  • Ultimate spread

    0.5-1 metres

  • Time to ultimate height

    2-5 years

How to grow

Cultivation Easy to grow in most moist, humus-rich, well-drained fertile soils, but will tolerate all but the poorest soils

Propagation Propagate by division in mid-spring

Suggested planting locations and garden types Flower borders and beds Low Maintenance Architectural Cottage & Informal Garden Prairie Planting

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