'Somewhere' over my long weekend at Nantahala I read/heard that the NPS with Americorp 'help' was planting willow on Smokies trout stream banks. Sorry I can't specify attribution-I'm big on picking-up all the 'freebie' literature and scanning it for errant area info.
If it's the same willow that I had to deal with on Michigan trout streams, somebody has screwed-up! It's the old kudzu debacle all over again. Laurel hells aren't bad enough:-)? Any facts? Ghost