Their brilliant colours bring a soft edge to WA's otherwise harsh and unforgiving landscape.
They are highly valuable as a tourist commodity, drawing in thousands of local and international visitors every year.
Above all, though perhaps less obviously, they also happen to be one of the most important parts of this State's extraordinary environment.
WA's native flowers have long been renowned as unique and diverse by botanists and it seems the State Government increasingly agrees.
Environment Minister Bill Marmion will today announce that almost 100 WA plant species' seeds have been sent to England as part of a global conservation project.
Mr Marmion said the delivery included the seeds from some of the State's most threatened flora.
It would also bring to more than 1250 the number of WA plant species sent to the Millennium Seed Bank at the Royal Botanic Gardens, which has "collaborated closely" with the Department of Environment and Conservation since 2000.
"These collections provide material for recovery and translocation of threatened species and are an insurance policy to safeguard Western Australia's unique plant diversity from extinction," Mr Marmion said.
"Since 2000, DEC has collaborated closely with the Millennium Seed Bank that aims to safeguard collections of 20 per cent of the world's most threatened native plants by 2020."
More than 3500 plant species are listed as either threatened or of particular conservation significance in WA.
Mr Marmion said "DEC aimed to have as many as possible of these species in collections at the Millennium Seed Bank as well as at the Conservation Science Centre" in Perth.