What makes this invasive, non-native reed grass thrive in the wetlands?

The Mississippi River Delta is home to the world's largest contiguous swath of Phragmites australis, or more commonly known as the common reed. But the plant that can grow to nearly 20 feet tall and has been a critical component in stabilizing the state's coast against erosion is not actually native to Louisiana—well, not entirely.

source https://www.lifetechnology.com/blogs/life-technology-science-news/what-makes-this-invasive-non-native-reed-grass-thrive-in-the-wetlands