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Cardboard, newspaper and other compostable material is a quick and easy fix for weed problems. In just one growing season, you can reduce weeds by 75 percent or more. Just place pieces of cardboard around the plants you want to protect. Water immediately to help the cardboard stay in place. You can add soil or mulch on top to reinforce it, too. The cardboard will suppress the weeds and eventually break down into the soil, adding useful organic matter.
I just found a brick with three holes down the middle buried in my garden yesterday! Soooo doing this. :)