What is raw grass and mature grass?

Grass generally refers to the lower mountain orchids, ripe grass refers to artificial planted or "domesticated" after the grass, ripe grass is generally divided into balcony grass and greenhouse grass, the old pot mouth, back to the sales of grass, etc., the general balcony grass is a better introduction, the general introduction of species depending on the differences between the last home and the environment you are in, the smaller the difference, the more resistant grass is the better! Downhill grass root system is generally not good, but the strong seedling (a multi-seedling grass) is easier to pot, is also better.