https://www.sciencealert.com/striking-expansion-of-two-antarctic-flowering-plants-is-a-climate-warning

From the article:

Flowering plants in the Antarctic region are rapidly expanding, scientists say, indicating the continuing effects of climate change on the continent. The findings suggest we may have reached a tipping point in this fragile, remote ecosystem.

A new study of this plant expansion looked at the two flowering plants native to Antarctica, Deschampsia antarctica and Colobanthus quitensis. Researchers measured the growth and expansion of these plants on a small subantarctic island called Signy Island from 2009 to 2019.

Some seeds are carried place to place on the winds. They probably came from Australia or southern Chile or Argentina or some such place.