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
Definition of 'substratum'. substratum. A substratum of something is a layer that lies under the surface of another layer, or a feature that is less obvious than other features. ...its deep substratum of chalk. His re-creation of the city is credible, with a substratum of fact to bolster the fiction.