Dave D.,
Good point to consider. I've punctured tractor tires on locust thorns too. I think though the bamboo is only strong enough to puncture a tire when cut smooth & straight. My bush-hog, I believe, will shatter it, besides I only want to control the edges of new growth/shoots which should be small & tender.
Andy,
I checked some websites on Miscanthus & now have a question on that plant. There was considerable concern for frost damage & recommendations to cover with mulch or thick straw in winter. Would this be a problem in NC?
Ranger,
Here is a link to Pampas Grass:
http://www.nps.gov/redw/pampas.htm Here's a couple more:
http://www.ces.uga.edu/Agriculture/horticulture/pampasgrass.html And this one has lots of info on other plants including aquatic weeds.
http://www.doc.govt.nz/Conservation/003%7EWeeds/Pampas-Grass.asp Here's one for Miscanthus:
http://www.fsperennials.co.uk/catalogue/pl_miscanthus.htm