| Minimum Purity | Minimum Viability by Germination or TZ Test | Maximum Other Crop* | Maximum Weed** | |
| Timothy seed | 97% | 85% | 0.2% | .02% |
| Purity component percentages are based on 1 gram sample size as prescribed by the AOSA rules. | ||||
| * | Must be free of ryegrass, orchardgrass, Agrostis sp., Poa sp., brome, reed canarygrass, tall fescue, and meadow foxtail. |
| Must be free of the above listed contaminants based upon a 50 gram examination. |
| ** | Must be free of alfilaria (redstem filaree), bromus sp., Chickweed including all other species in the Caryophyllaceae family, Henbit, Poa sp., wild carrot, and prohibited noxious weeds listed in WAC 16-301-045 and restricted noxious weeds listed in WAC 16-301-050. |
| Must be free of the above listed contaminants based upon a 50 gram examination. |