secale cereale, anthemis arvensis, apera spica-venti, centaurea cyanus, equisetum arvense, erigeron canadensis, myosotis stricta, roemeria argemone, scleranthus annuus, viola arvensis, achillea millefolium, arenaria serpyllifolia, buglossoides arvensis, descurainia sophia, draba verna, fallopia convolvulus, persicaria maculosa, polygonum aviculare, potentilla reptans, rumex acetosella, silene latifolia, spergula arvensis, veronica triphyllos, vicia sativa