All flowery rhetoric aside about occupying a vacant niche, how do you get rid of Bermuda grass? Am I just supposed to wait until my trees get huge to shade out the grass? When that happens the trees will also be shading out my veggies. I can't put in guinea pigs, because they will nibble at the veggies in addition to the grass. Also, the pathways are not shady, so it seems like Bermuda grass will keep on colonizing the pathways. My original thought was to stop caring about it, but then you get a client who doesn't want it, and all your permaculture laziness goes out the window.