cirsium arvense, erigeron canadensis, corispermum intermedium, elymus repens, poa annua, agrostis stolonifera, cirsium vulgare, crepis capillaris, dactylis glomerata, erodium cicutarium, jacobaea vulgaris, medicago lupulina, poa pratensis, sonchus asper, tripleurospermum maritimum, capsella bursa-pastoris, senecio viscosus, sonchus oleraceus