We have about a 3 foot high above-ground vegetable garden that I want to convert to a ornamental grass display, if you will. We are done with vegetables and I have a lot of ideas of different grasses I could plant, but before I do, I have a question. Will they make it through the Winter with the elevation?

Also, is there an easy way to get weeds that sprout up in the middle of ornamental grass? I have 2 Miscanthus sinensis purpurascens, which were planted in 2005, that are getting a really nice diameter. I'm finding weeds and it is hard to get, if not impossible, down in between the blades.