Crocosmia ×crocosmiiflora (Lemoine) N.E.Br.
Trans.Roy.Soc.South Africa 20:264 (1932)

Conservation Code: Not threatened
Naturalised Status: Alien to Western Australia
Name Status: Current

Brief Description
Amanda Spooner, Wednesday 15 August 2007

Cormous, perennial, herb, 0.3-1(-1.5) m high. Fl. orange-red, Nov to Dec or Jan to Mar. Black or grey sandy loam, sandy clay over clay. Flats, hills, along permanent creeklines, grassy verges.

Distribution

Beard’s Provinces: South-West Province.

IBRA Regions: Jarrah Forest, Warren.

IBRA Subregions: Southern Jarrah Forest, Warren.

IMCRA Regions: WA South Coast.

Local Government Areas (LGAs): Albany, Augusta-Margaret River, Denmark, Manjimup.

Management Notes (for the Swan NRM Region)
Kate Brown and Karen Bettink, Thursday 21 December 2017

Alternative Names. Montbretia, x crocosmiiflora Lemoine, Tritonia x crocosmiflora G.Nicholson.

General Biology. Growth form. Geophyte. Life form. Perennial corm. Reproduction. Corms, stolons, occasionally seed. Dispersal. Water, machinery, soil movement. Fire response. Generally survives fire.

Notes. Seed viability is variable across regions. Plants may have as many as 15 corms at the base that form a dense mat below the soil surface.

Additional information. Origin. Hybrid betweeen two South African species. History of use/introduction. Garden escape. Similar exotic species. Chasmanthe floribunda.

Suggested method of management and control. Spot spray 2% glyphosate + Pulse® in late spring just before flower spikes emerge and before new corms develop. Hand remove carefully to ensure all corms are removed. Corms dislodge easily. Read the manufacturers' labels and material safety data sheets before using herbicides. For further information consult the Australian Pesticides and Veterinary Medicines Authority to determine the status of permits for your situation or state.

Management Calendar

Calendar Type Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Comments
Dormant         Y Y Y Y          
Active Growth Y Y Y Y         Y Y Y Y  
Flowering Y O O                 Y  
Optimum Treatment                   Y Y    

Legend: Y = Yes, regularly, O = Occasionally, U = Uncertain, referred by others but not confirmed.

 

References

  • Benson, D. & McDougall, L. (2002) Ecology of Sydney Plant Species Part 9: Monocotyledon families Agavaceae to Juncaginaceae. Cunninghamia, 7 (4): 695-730.
  • Harden, G.J. (ed.) (1990-93) Flora of New South Wales Vols. 1 to 4. New South Wales University Press, Kensington.
  • Hursthouse, R. (2006) Weed Control Guide. Centennial Park Bush Society, Campbells BayP O Box 31 677, Milford, North Shore City.. Ver. 3. URL: http://www.manawa.org.nz/files/120/Weed%20Control%20Guide%200603.CV.pdf - Accessed November 2007. New Zealand.
  • Hussey, B.M.J., Keighery, G.J., Dodd, J., Lloyd, S.G. & Cousens, R.D. (2007) Western Weeds. A guide to the weeds of Western Australia. 2nd Edition. The Plant Protection Society of Western Australia, Victoria Park.
  • Muyt, A. (2001) Bush invaders of South-East Australia: A guide to the identification and control of environmental weeds found in South-East Australia. R.G. & F.J. Richardson, Melbourne.
  • New Zealand Plant Conservation Network (2005) Crocosmia x crocosmiiflora. URL: http://www.nzpcn.org.nz/exotic_plant_life_and_weeds/detail.asp?WeedID=1409 - Accessed November 2007.
  • Peirce, J.R. (1998) Oxalis pes-caprae L. In Biology of Australian weeds, Vol. 2 (eds. F.D. Panetta, R.H. Groves, & R.C.H. Shepherd). R.G. & F.J. Richardson, Melbourne.

Project information and acknowledgements