capsella bursa-pastoris, chaenorhinum minus, chamaenerion dodonaei, chelidonium majus, cirsium arvense, cornus sanguinea, erigeron canadensis, galium album, galium rivale, hypericum perforatum, impatiens noli-tangere, plantago lanceolata, poa annua, polygonum aviculare, populus nigra, populus tremula, potentilla verna, sedum acre, symphytum officinale, vicia cracca