stellaria media, capsella bursa-pastoris, cirsium arvense, convolvulus arvensis, elymus repens, erigeron annuus, erigeron canadensis, galinsoga parviflora, lepidium ruderale, lolium perenne, matricaria chamomilla, medicago lupulina, oxalis stricta, plantago major, poa annua, poa pratensis, polygonum aviculare, prunella vulgaris, ranunculus repens, rorippa sylvestris, senecio vulgaris, sonchus arvensis, trifolium repens, urtica dioica, urtica urens