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Germination Expiration dates
A germination test is valid for 15 months for cool-season grasses and 9 months for all other seed. However, agricultural or vegetable seed packaged in hermetically sealed containers may be distributed for a period of thirty-six months.
Common cool-season grasses are tall fescue, ryegrass, Kentucky bluegrass, red fescue, chewings fescue, and hard fescue.
Printable Cheat sheets:
Letter size - with cool season grass list