digitaria sanguinalis, stellaria media, capsella bursa-pastoris, euphorbia peplus, lipandra polysperma, oxalis stricta, amaranthus powellii, chaenorhinum minus, chelidonium majus, chenopodium album, erigeron annuus, galinsoga quadriradiata, glechoma hederacea, lamium purpureum, lysimachia arvensis, matricaria chamomilla, poa annua, polygonum aviculare, portulaca oleracea, trifolium pratense