Wash. Admin. Code § 16-302-435
Lot standards for certification of sudangrass are as follows:
| Purity | Foundation | Registered | Certified |
| Pure seed (min.) | 98.00% | 98.00% | 98.00% |
| Inert material (max.)* | 2.00%* | 2.00%* | 2.00%* |
| Other crop (max.) | 0.01% | 0.03% | 0.08% |
| Weed seed (max.) | 0.10% | 0.10% | 0.10% |
| Prohibited or restricted noxious weed seeds | None found | None found | None found |
| Germination (min.) | 85.00% | 85.00% | 85.00% |
| * | Inert matter must not contain more than 0.5% of material other than seed fragments of the variety under consideration. |
[Statutory Authority: RCW 15.49.005, [15.49].021, [15.49].310, [15.49].370, 15.140.030, and chapter 15.49 RCW. WSR 25-09-035, s 16-302-435, filed 4/9/25, effective 5/10/25. Statutory Authority: Chapters 15.49 and 34.05 RCW. WSR 02-12-060, § 16-302-435, filed 5/30/02, effective 6/30/02. Statutory Authority: RCW 15.49.005, 15.49.081, 15.49.310, 15.49.370(3) and chapter 17.24 RCW. WSR 00-24-077, § 16-302-435, filed 12/4/00, effective 1/4/01.]