It is widely cultivated as an ornamental plant, with several cultivars selected for variation in flower colour, including 'Moonlight' with deep yellow flowers, 'Andreanus' and 'Firefly' with dark orange-red flowers, and growth habit, including 'Pendula' with pendulous branchlets.
It has been introduced into several other continents outside its native range and is classified as a noxious invasive species in California and the Pacific Northwest in North America, Australia and New Zealand. It commonly grows in disturbed areas along utility and transportation right-of-ways. The prolific growth of this species after timber harvest inhibits reforestation by competing with seedling trees. It is estimated that in Oregon it is responsible for USD$47 million in lost timber production each year in that state. Some attempts have been made to develop biological controls in affected areas, using three broom-feeding insects, the psyllid Arytainilla spartiophylla, the beetle Bruchidius villosus, and the moth Leucoptera spartifoliella.
In New Zealand broom is estimated to cost farmers NZD$10 million and the forestry industry NZD$90 million. Biological control for broom has been investigated since the mid 1980s with a number of species being trialled. They include the broom twig miner (Leucoptera spartifoliella), the broom seed beetles (Bruchidius villosus) the broom gall mite (Aceria genistae) the sap-sucking broom psyllid (Arytainilla spartiophila) and recently the broom leaf beetle (Gonioctena olivacea) and the broom shoot moth (Agonopterix assimilella).
See also: Flower Malaysia, Malaysia Flower, Florist KL