The phrase "quality grass" refers to high-quality or premium grass that is healthy, well-maintained, and desirable. It usually implies that the grass is lush, green, and free from weeds or other defects. Full definition
Be sure to choose a high quality grass fed gelatin like this one. (simplepurebeauty.com)
I am gluten and diary intolerant so avoid these foods always and just eat lots of fruit, vegetables and good quality grass fed, organic meats. (conscious-foodie.com)
In addition we give all these patients good quality grass hay. (rabbit.org)