Just brought up this old thread on my search of "big bluestem".
My question is this: Could a deeply rooted native grass(I'm in IA), such as switch grass, cause a problem on a newly constructed dam/dike? I dont want any disturbance of the clay liner. My original plan was to plant a lawn mix to mow on the entire dam but now I'm thinking possibly only doing that on the crown and then planting switch grass on the slope and area immediately below/surrounding the dam. I'm just concerned with the deep roots causing leakage issues, should I be worried?
