Seed standards

Standards for Each Class Factor Foundation Registered Certified Pure seed (minimum) 99.0 percent 99.0 percent 98.5 percent Total weed seeds (maximum) 15 per pound 15 per pound 30 per pound Other varieties (maximum) * Brown 2 per pound 8 per pound 16 per pound Yellow 4 per pound 16 per pound 32 per pound Other crop seeds (maximum) 2 per pound 5 per pound 10 per pound Inert matter (maximum) ** 1.0 percent 1.0 percent 1.5 percent Prohibited noxious weed seeds *** none none none Objectionable weed seeds (maximum) + 1 per 2 pounds 1 per 2 pounds 3 per pound Germination (minimum) 85.0 percent 85.0 percent 85.0 percent *Other varieties may not include variants characteristic of the variety. **Foreign matter, other than broken seed, may not exceed 0.2 percent. ***Including seeds of quackgrass. +Objectionable weed seeds include dodder species, wild oats, hedge bindweed (wild morning glory), giant ragweed (kinghead), small seeded falseflax, and American dragonhead.