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.
All I have ever planted is the green onion, the long onion with the edible part at the top and the long green stem. You buy those in bunches of about 100 and plant them and they grow into thin onions to eat or you can leave them in the ground and they will continue to grow pretty big.n fact you can eat the flower the onion will get if you leave it in the ground that long. To plant your onion sink it into the ground so that the onion top is level with the soil surface.