Before buying seed, you'll want to know what's actually in the bag. Seed tags (required by law) will tell you the facts about seed quality.

% Pure Seed:
This figure tells how much of the contents are actually seed. The higher the percentage, the better the value.

% Other Ingredients:
Amount of other crop seeds, inert matter, and weed seeds included. The higher this number, the less seed you are getting.

% Germination:
How much of the grass seed in the bag really grew under actual testing. The higher the percentage, the better the quality of germination.