- Reference
- J.S.African Bot. 36:273 (1970)
- Conservation Code
- Not threatened
- Naturalised Status
- Alien to Western Australia
- Name Status
- Current
Cormous, perennial, herb, to 0.45 m high, the var. flava is occasionally cultivated as an ornamental but has not become naturalised. Fl. yellow, Jul to Sep. White-grey sand or loam, black sandy clay, granite. Low rises, plains and slopes, winter-wet sites, edges firebreaks.
Distribution
- IBRA Regions
- Avon Wheatbelt, Jarrah Forest, Swan Coastal Plain.
- IBRA Subregions
- Katanning, Northern Jarrah Forest, Perth.
- Local Government Areas (LGAs)
- Bayswater, Bunbury, Busselton, Cambridge, Canning, Cockburn, Cranbrook, Gosnells, Kalamunda, Kulin, Mandurah, Melville, Murray, Nedlands, Perth, Stirling, Subiaco, Swan, Wanneroo, West Arthur, York.
Management Notes (for the Swan NRM Region)
General Biology. Growth form. Geophyte. Life form. Annually renewed corm. Reproduction. Seed. Dispersal. Water, machinery. Time to first flowering. 2 years. Seedbank persistence. Medium, 1-5 years. Fire response. Generally survives fire.
Additional information. Origin. Southern Africa. Similar exotic species. Romulea rosea.
Suggested method of management and control. Spot spray metsulfuron methyl 0.2 g/15 L + Pulse® or 2.5-5 g/ha + 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 | Y | |||||||||
| Active Growth | Y | Y | Y | Y | Y | Y | Y | Y | |||||
| Flowering | Y | Y | Y | ||||||||||
| Germination | Y | 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.
- Du Plessis, N. & Duncan G. (1989) Bulbous plants of Southern Africa. Tafelberg Publishers Ltd, Cape Town, South Africa.
- 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.
- Manning, J., Goldblatt, P. & Snijman, D. (2002) The color encyclopedia of Cape bulbs. Timber Press, Portland, USA.
- Van Kleunen, M. & Johnson, S.D. (2007) South African Iridaceae with rapid and profuse seedling emergence are more likely to become naturalized in other regions. Journal of Ecology, 95 (4): 674 - 681.