capsella bursa-pastoris, centaurea cyanus, chenopodium album, convolvulus arvensis, descurainia sophia, galium spurium, polygonum aviculare, agrostemma githago, anthemis arvensis, arenaria serpyllifolia, buglossoides arvensis, camelina microcarpa, cirsium arvense, equisetum arvense, roemeria argemone, viola arvensis