achillea millefolium, poa pratensis, erigeron canadensis, agrostis capillaris, arenaria serpyllifolia, bromus hordeaceus, carex hirta, cerastium semidecandrum, chenopodium album, dactylis glomerata, elymus repens, equisetum arvense, holcus mollis, poa annua, rumex acetosella, sonchus oleraceus, trifolium arvense, trifolium dubium