Chenopodium album
While the horses eat a variety of different plant species, they tend to favor different species at different times of year. In the springtime, they favor "Elymus repens", "Corynephorus canescens", "Festuca valesiaca," and "Chenopodium album". In early summer, they favor "Dactylis glomerata" and "Trifolium", and in late summer, they gravitate towards "E. repens" and "Vicia cracca".