Definition of diastereomer. : a stereoisomer of a compound having two or more chiral centers that is not a mirror image of another stereoisomer of the same compound â compare enantiomer.
Most perennial weeds such as Johnsongrass. are also suppressed although vigorous plants or heavy in-. festations may lift plastic. Perennial sedges, and to a lesser. extent, grasses can puncture sheet mulches as the weeds. emerge from the soil, resulting in inadequate control.
Plastic sheeting is a polyethylene film, available in clear and black, and in various thicknesses. Itâs available just about anywhere selling hardware, in both black and clear, and in several thicknesses. Some folks like to use transparent duct tape to piece together visqueen.