Slender, weeping shrub, to 3 m high. Fl. white, Jul to Sep. White or yellow sand, limestone. Coastal sand dunes, valleys, road verges.
Beard’s Provinces: South-West Province.
IBRA Regions: Jarrah Forest, Swan Coastal Plain.
IBRA Subregions: Northern Jarrah Forest, Perth.
IMCRA Regions: Central West Coast, Leeuwin-Naturaliste.
Local Government Areas (LGAs): Bunbury, Busselton, Cambridge, Dardanup, Greater Geraldton, Joondalup, Melville, Mosman Park, Mundaring, Rockingham, Wanneroo, Waroona.
Alternative Names. Bridal Broom.
General Biology. Growth form. Shrub. Reproduction. Seed. Dispersal. Soil, water, garden waste, rabbits, inappropriate plantings, possibly also dispersed by ants. Time to first flowering. 2 years. Toxicity. Leaves, flowers and fruit toxic. Has been known to cause respiratory failure. Vegetative regeneration strategy. Resprouts. Seedbank persistence. Soil, long, 5+ years. Sets prolific, hard coated seed with medium to long term persistence up to 20 years. Fire response. Plants may be killed by very hot fire, however are likely to survive and resprout following less severe fires. Fire can also break seed dormancy, resulting in mass germination of seedlings.
Notes. Thought to be one of the most drought tolerant of the brooms. Juvenile plants have a deep tap root making hand removal difficult. Prefers calcareous soils in coastal and inland areas.
Additional information. Origin. North Africa/Mediterranean, including Algeria, Egypt, Libya, Morocco, Tunisia, Israel, Jordan, Lebanon. History of use/introduction. Originally introduced into South Australia as an ornamental. Later used in roadside plantings and for dune stabilisation. Similar exotic species. Retama monosperma, Spartum junceum (Spanish Broom).
Suggested method of management and control. Hand pull seedlings. For juvenile and mature plants, cut and paint with 50% glyphosate or basal bark with tricoplyr + diesel at 1.25 L/60 L. Monitor site for recruitment from seedbank. 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.
Legend: Y = Yes, regularly, O = Occasionally, U = Uncertain, referred by others but not confirmed.
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Western Australian Herbarium (1998–). FloraBase—the Western Australian Flora. Department of Biodiversity, Conservation and Attractions. https://florabase.dpaw.wa.gov.au/