ceratodon purpureus, urtica urens, erigeron canadensis, capsella bursa-pastoris, lamium purpureum, poa annua, poa trivialis, senecio vulgaris, solanum nigrum, stellaria media, crepis capillaris, elymus repens, erodium cicutarium, galinsoga parviflora, galinsoga quadriradiata, malva sylvestris, matricaria discoidea, ranunculus repens, rumex acetosella