artemisia scoparia, cynodon dactylon, anchusa officinalis, apera spica-venti, artemisia campestris, bromus commutatus, centaurea arenaria, crepis foetida, erigeron canadensis, geranium pusillum, plantago lanceolata, polygonum aviculare, rumex crispus, sonchus asper, stellaria media, xanthium orientale