stellaria media, oxalis stricta, acer platanoides, echinochloa crus-galli, erigeron canadensis, veronica hederifolia, arenaria serpyllifolia, bromus tectorum, cerastium holosteoides, draba verna, geranium pusillum, medicago lupulina, melilotus officinalis, polygonum aviculare, senecio vulgaris, sonchus oleraceus, trifolium campestre, tripleurospermum inodorum