• 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

Asplenium scolopendrium (Crispum Group) 'Crispum Bolton's Nobile'

Hart's tongue fern 'Crispum Bolton's Nobile'

Hart's tongue fern 'Crispum Bolton's Nobile'

© � RHS

  • Other common names Hart's tongue fern 'Crispum Bolton's Nobile'

  • Genus Asplenium are evergreen ferns with short, usually erect rhizomes bearing a rosette of slightly leathery fronds which may be simple, pinnate to 3-pinnate

  • Family Aspleniaceae / Aspleniaceae

  • Species 'Crispum Bolton's Nobile' is an evergreen fern forming a handsome rosette of broad, rich green, strap-like fronds to 30 by 10cm, with strongly undulate margins; sterile


  • Foliage Evergreen

  • Habit Bushy



  • Full Shade

  • Partial Shade

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

  • Exposure Exposed or Sheltered


  • Chalk


  • Chalk


  • Chalk


  • Chalk


  • MoistureMoist but well-drained

  • SoilSand, Clay, Chalk, Loam

  • pHAlkaline, Neutral


  • Ultimate height

    0.1-0.5 metres

  • Ultimate spread

    0.1-0.5 metres

  • Time to ultimate height

    2-5 years

How to grow

Cultivation Grows well in humus-rich, moist but well-drained soil. Bright mid-day sun can cause damage. May be sensitive to fungicides.Tolerant of dry shade but water regularly during the first season and mulch well

Propagation Propagate by division in spring. Peeled leaf bases can be taken off from where the stem joins with the root. Old leaf bases that are green at the base are incubated in a plastic bag of loam based media. Green swellings can be found and potted to raise new plants

Suggested planting locations and garden types Banks and Slopes Flower borders and beds Ground Cover City & Courtyard Gardens Cottage & Informal Garden Patio & Container Plants

How to care

Pruning Dead or damaged fronds may be removed as necessary

Pests Generally pest free outdoors

Diseases May be infected by a rust in mild, damp winters

Advertise here