Oxalis flava L.
Pinkbulb Soursob
- Reference
- Sp.Pl. 1:433 (1753)
- Conservation Code
- Not threatened
- Naturalised Status
- Alien to Western Australia
- Name Status
- Current
Bulbaceous and rhizomatous, perennial, herb. Fl. yellow, May. Roadsides.
Distribution
- IBRA Regions
- Avon Wheatbelt, Jarrah Forest.
- IBRA Subregions
- Katanning, Northern Jarrah Forest, Southern Jarrah Forest.
- Local Government Areas (LGAs)
- Donnybrook-Balingup, Northam, Williams, York.
Management Notes (for the Swan NRM Region)
General Biology. Growth form. Geophyte. Life form. Annually renewed bulb. Reproduction. Bulbils. Dispersal. Soil. Fire response. Generally survives fire.
Notes. Not known to set seed in Australia.
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 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 | O | Y | |||||||||
| Active Growth | Y | Y | Y | Y | Y | Y | O | U | |||||
| Flowering | Y | ||||||||||||
| Optimum Treatment | Y |
Legend: Y = Yes, regularly, O = Occasionally, U = Uncertain, referred by others but not confirmed.
References
- Brooks, K. (2001) Managing weeds in bushland: Soursob, Fingerleaf and Four oclock (Oxalis pes-caprae, O.glabra and O.purpurea). Environmental Weeds Action Network URL: 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.