| Attacks new seedlings | |
| Emergence to first cutting: | |
| Potato leafhopper | Slugs |
| Black cutworm | Garden symphylan |
| Variegated cutworm | |
| Second cutting: | |
| Potato leafhopper | Pea aphid |
| Grasshoppers | Plant bug spp. |
| Spotted alfalfa aphid | |
| Attacks established stands and fall seedings | |
| First cutting: | |
| Alfalfa weevil | |
| Second through fourth cuttings: | |
| Potato leafhopper | Alfalfa blotch leafminer |
| Pea aphid | Variegated cutworm |
| Spittlebug | Clover leaf weevil |
| Clover root curculio | Grasshoppers |
| Plant bug spp. | |
