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.
Method. 1  Peel the onion, slice in half through the root and trim off the top. 2  Place cutside down on a chopping board. 3  With your knife parallel to the board, cut 3 slices through the onion, keeping the root intact.4  With the knife point at root end, cut down through the onion from top to bottom 4 times.ethod. 1  Peel the onion, slice in half through the root and trim off the top. 2  Place cutside down on a chopping board. 3  With your knife parallel to the board, cut 3 slices through the onion, keeping the root intact.