convolvulus arvensis, amaranthus retroflexus, capsella bursa-pastoris, cirsium arvense, hordeum murinum, stellaria media, bromus sterilis, poa annua, erigeron canadensis, geranium dissectum, malva neglecta, oxybasis rubra, sonchus arvensis, sonchus oleraceus, stachys annua, thlaspi arvense, urtica urens