Not all grass seed is the same. Advances in lawn seed technology over the past 7 to 10 years have created improved varieties that are more resistant to insects, disease and drought. Yet more than half of the lawns in North America are more than 7 years old. When you are ready to buy seed, turn to the label on the back. By law, the seed box or bag must contain a label that tells you what is in the container.
Improved varieties have characteristics that can be patented.
You should find specific trade names of varieties rather than generic names. The higher the percentage, the better. Inert matter is any substance that is not cabable of growth. It could be broken seed or a filler. Our example is an acceptable level.