Native.
Sycamore trees are not native to Australia, but have been introduced. The sycamore trees that have been brought to Australia are not poisonous to humans, but they pose a severe threat to Australian native plants.
There are two answers. The rabbit is the main problem, as it eats the vegetation which is the food source for native animals. The fox is also a major problem for Australia's native animals, though it does not cause the same damage as rabbits do to native plants.
Australian Native Plants Society - Australia - was created in 1957.
Spinifex
According to Dylan, you shouldn't.
Australia has many native plants. If the question means the national floral emblem of Australia, the answer is Golden Wattle.
early 1800's
spinifex and pinago. ithink
to prevent native plants from being extinct
Yes, although they are only grown as indoor plants; they are not native to Australia.
yes it can threat a country! or a state doesnt matter because plants are strong!
In North America two big culprits are the Russian thistle (tumbleweed) and tamarisk (salt cedar). Both are noxious, invasive species that steal space and moisture from native plants. The prickly pear has been introduce into parts of Australia and Africa and are now unwelcome intruders. Other deserts around the world have similar problem plants.