This resource tells us which pests have been observed on 2nd year white clover at the Chertsey Arable Research site.
Growers should remain vigilant when monitoring crops to ensure these pests don’t cause seed loss. Crops that flowered earlier and are close to desiccation are at lower risk than later ones. As such, decisions on whether to manage these pests will depend on how close the crop is to desiccation. Check with your rep for advice.