Brandon Herlein wrote:

My yards has been taken over by weeds. I am thinking of killing it all off
with Round-up and starting from new. What is the best way, time, etc to
start a new lawn. I live in Iowa.


Try a selective herbicide first. Normally you can wack the weeds a
second time in a couple of weeks. Then twice more in the spring and I'll
bet you're going to have a lawn.

Peter H