euphorbia maculata, digitaria sanguinalis, polygonum aviculare, oxalis stricta, amaranthus retroflexus, chenopodium album, convolvulus arvensis, elymus repens, eragrostis minor, erigeron canadensis, galinsoga parviflora, lysimachia arvensis, plantago major, portulaca oleracea, sonchus oleraceus, taraxacum minimum, trifolium repens