Cool-season grasses usually start growing two weeks after planting, while warm-season grasses can take up to 30 days to germinate. Cool-season grasses usually start growing two weeks after planting, while warm-season grasses can take up to 30 days to germinate.
substratum - an indigenous language that contributes features to the language of an invading people who impose their language on the indigenous population; the Celtic languages of Britain are a substrate for English
substratum - a surface on which an organism grows or is attached; the gardener talked about the proper substrate for acid-loving plants substrate surface - the extended two-dimensional outer boundary of a three-dimensional object; they skimmed over the surface of the water; a brush small enough to clean every dental surface; the sun has no distinct surface