Looking for advice on soil preparation
I have about 1/3 (+ or -) acre of lawn that I would like to plant with wildflowers. Last September I sprayed round-up to kill the existing grass. My original plan was to till the area this spring then keep going over it every couple of weeks through the summer to germinate and eliminate as many weeds as possible. I would like to sow the flower seed this fall.
The problem is that the area I have selected is moderately sloping and I am concerned about soil erosion. Would I be better off laying down plastic over the summer (that's allot of plastic)? Would that be an effective method to eliminate any dormant weeds in the soil? If so, is clear or black plastic better and what is the minimum thickness that I should use? Also, how do I prepare the seed bed in the fall? We get a fair amount of rain through the winter so soil erosion would still be a concern. Could I till the area, spread the seed then cover with straw for the winter? I'd appreciate any advice.