Plants → Oxalidaceae → Oxalis
Oxalis pes-caprae L.
Soursob
Sp.Pl. 1:434 (1753)
Conservation Status:
Alien
Name Status:
Current
Brief Description
Grazyna Paczkowska,
Monday 12 August 1996
Bulbaceous and rhizomatous, perennial, herb, 0.1–0.3 m high. Fl. yellow, Jun–Oct. A common weed. Distribution: ER: COO, YAL; SW: AW, ESP, GS, JF, MAL, SWA, WAR.
Management Notes
Kate Brown and Karen Bettink,
Wednesday 5 August 2009
Alternative Names. Sour Grass.
General Biology. Growth form. Geophyte. Life form. Annually renewed bulb. Reproduction. Bulbils. Dispersal. Soil, birds. Fire response. Generally survives fire.
Additional information. Origin. South Africa.
Suggested method of management and control. Spot spray metsulfuron methyl 0.2 g/15 L + Pulse®, or 1% glyphosate. Apply at bulb exhaustion, generally just on flowering. Exercise care if manually removing as physical removal can result in spread of bulbils. 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 | Y | ||||||||
| Active Growth | Y | Y | Y | Y | Y | Y | Y | ||||||
| Flowering | Y | Y | Y | Y | |||||||||
| Optimum Treatment | Y | Y |
Legend: Y = Yes, regularly, O = Occasionally, U = Uncertain, referred by others but not confirmed.
References
- Benson, D. & McDougall, L. (1999) Ecology of Sydney Plant Species Part 7a, Dicotyledon families Nyctaginaceae to Primulaceae. Cunninghamia, 6 (2): 403-441.
- Brooks, K. (2001) Managing weeds in bushland: Soursob, Fingerleaf and Four oclock (Oxalis pes-caprae, O.glabra and O.purpurea). Environmental Weeds Action NetworkURL: http://www.environmentalweedsactionnetwork.org.au/ - Accessed December 2007.
- Brown, K. & Brooks, K. (2002) Bushland Weeds: A Practical Guide to their Management. Environmental Weeds Action Network, Greenwood.
- Harden, G.J. (ed.) (1990-93) Flora of New South Wales Vols. 1 to 4. New South Wales University Press, Kensington.
- 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.
- Paczkowska, G. & Chapman, A.R. (2000) The Western Australian flora: A descriptive catalogue. Western Australian Wildflower Society (Inc.), Western Australian Herbarium and Botanic Gardens and Parks Authority, Perth.
- Parsons, W.T. & Cuthbertson, E.G. (2001) Noxious weeds of Australia. 2nd Edition. CSIRO Publishing, Collingwood.
- 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.
