polygonum aviculare, bromus tectorum, senecio viscosus, agrostis capillaris, amaranthus retroflexus, artemisia vulgaris, berteroa incana, bromus hordeaceus, chenopodium album, dactylis glomerata, elymus repens, erigeron canadensis, lepidium ruderale, linaria vulgaris, lolium perenne, plantago lanceolata, plantago major, poa pratensis, rumex acetosa, senecio vulgaris, sonchus oleraceus, trifolium pratense, trifolium repens, tripleurospermum inodorum