Previous owner planted this grass on a steep slope, which is very wet. It is competing with another plant I believe is Acorus...among others. ;o) It is about 18-20' high and spreading quite extensively through that area of the garden and I would like to get rid of it. Will that be possible given the head start it has on me. The only thing I can think of doing next year is to perch on my butt and work my way down the hill with Roundup and a paintbrush in hand. It's going to make for a very wet butt.

Forgive quality of pictures, but it's treacherous in there...

Thanks for any insight!