Is this an invasive species?

Is this a miscanthus grass species? If it is, then this may well be one of the grasses often found along roadsides and agricultural fields. It is called an invasive species but it didn't invade; it was invited in to be used as a decorative ornamental plant.

Miscanthus grasses are native to Japan, China and Korea. They made the leap to North America near the end of the nineteenth century. Fast growing, the foreign species spreads fast, displacing native plant communities.

The dense, dry stands are highly flammable and have even been spotted in distant California. Just what that state needs: another fire hazard.

And why did I start this post with a question? Because this might also be pampas grass. In some areas, like California, pampas grass, cortaderia selloana, is considered invasive but not in Ontario.