Use of black plastic to kill grasses and prepare beds?
I have a large area that I would like to make into a children's garden next Spring (2008.) Its a mixture of weeds, wildflowers and mostly bermuda grass right now. I'm thinking about putting down black plastic and leaving it there for a while in attempt to kill off the existing bermuda. Can anyone tell me if this will be effective and if so, will it be very damaging to the soil? How long would I need to leave the plastic there for this to be effective?
We currently have a 400 sq. ft organic garden and we are just dealing with the bermuda by constantly digging it up or cutting it down. I'd love to have a bit a fresh start on this new project! ;) I realize that the bermuda runners can creep back in, but I'm hoping to get a head start on them!
Thanks in advance for any advice!