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.
1 On the last water change, add a tray of ice cubes. 2  Drain salmon and remove any bones and skin. 3  Dice into small cubes. 4  Gently mix (with your fingers) salmon, diced tomatoes, and sweet onion. 5  Cover and chill for several hours. 6  Before serving add ice cubes and green onions.  Gently mix together and serve.