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Ixia polystachya L.
Variable Ixia

Reference
Sp.Pl. edn 2, 1:51-52 (1762)
Conservation Code
Not threatened
Naturalised Status
Alien to Western Australia
Name Status
Current

Cormous, perennial, herb, 0.3-1 m high. Fl. blue/pink/white, Sep to Dec. Grey sandy clay or sandy loam. Winter-wet areas, slopes.

Amanda Spooner, Descriptive Catalogue, 7 October 2002
Image

Distribution

IBRA Regions
Jarrah Forest, Swan Coastal Plain, Warren.
IBRA Subregions
Northern Jarrah Forest, Perth, Southern Jarrah Forest, Warren.
IMCRA Regions
WA South Coast.
Local Government Areas (LGAs)
Albany, Armadale, Bridgetown-Greenbushes, Busselton, Capel, Collie, Denmark, Donnybrook-Balingup, Kalamunda, Manjimup, Murray, Perth, Swan, West Arthur.

Management Notes (for the Swan NRM Region)

General Biology. Growth form. Geophyte. Life form. Annually renewed corm. Reproduction. Variable seed set. Dispersal. Water, soil. Fire response. Generally survives fire.

Additional information. Origin. South Africa. History of use/introduction. Garden escape.

Suggested method of management and control. Spot spray metsulfuron methyl 0.2 g/15 L + Pulse® (or 2.5 - 5g /ha + Pulse®) or 2,2 DPA 5 g/L+ Pulse®. Apply just on flowering at corm exhaustion. 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                    
Active Growth       Y Y Y Y Y Y Y Y Y  
Flowering                   Y Y Y  
Fruiting                     Y Y  
Optimum Treatment                 Y Y      

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

 

References

  • Brown, K. & Brooks, K. (2002) Bushland Weeds: A Practical Guide to their Management. Environmental Weeds Action Network, Greenwood.
  • Easton, S.D. & Dixon I.R. (2007) Effectiveness of 2,2-DPA in Controlling Babiana, Ixia and Allium in Native Bushland. Australian Association of Bush Regenerators (WA) Inc. Newsletter., 15 (5).
  • 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.