I have done this, but didn't know to wet it before putting down the mulch. The paper blew all over and I had a terrible time keeping all the soild covered while I put down the mulch. Video: Easy Organic Weed Control with Paper and Mulch – An.
Weed killer: 1 gallon vinegar, 2 cups epsom salt, cup dish soap not sure how this is organic unless she uses organic vinegar, organic Epsom salt & organic dishsoap- which I don't think is possible but more or less chemical free.
Cornmeal In Gardens – Using Cornmeal Gluten To Kill Ants And Weeds
Cornmeal is known as a natural substitute for chemical preemergent herbicides. Using cornmeal as weed killer is a great way to eradicate weeds without the threat of toxic chemicals. Apply early spring before weed seeds sprout