Cement is a fine, soft, powdery-type substance. It is made from a mixture of elements that are found in natural materials such as limestone, clay, sand and/or shale. When cement is mixed with water, it can bind sand and gravel into a hard, solid mass called concrete.
Overview. While onions may be welcome in your vegetable garden, they are considered weeds in your lawn. Onion grass, a type of wild onion, often flourishes in yards, particularly in the southeastern region of the U.S. Like most common lawn weeds, onion grass can be eliminated with commercial herbicides and weed killers.tep 2. Cut onion grass very short to prevent flowering. Onion grass reproduces by flowering and seeding. By cutting onion grass to the same height as your lawn grass, you can stop it from spreading.
Mix the vinegar and water together in a watering can, bucket or drip-system receptacle. Apply the mixture to the soil around your plants to increase the acidity. Take care to not get much--if any-of the mixture directly on the plant stems or leaves. Kill weeds and grass. Apply full-strength vinegar directly to any weed or area of grass that you want to eliminate.