| Field Producing* | |||
| Foundation | Registered | Certified | |
| Other varieties | 0.1% | 0.5% | 1.0% |
| Sweet Clover | none found | 5 plants/acre | 10 plants/acre |
| Red Clover | none found | 4 plants/acre | 20 plants/acre |
| * | Prohibited noxious weeds must be controlled to prevent seed formation. |