populus canadensis, poa trivialis, lolium perenne, ranunculus acris, ranunculus repens, elymus repens, holcus lanatus, cirsium arvense, anthriscus sylvestris, cerastium holosteoides, dactylis glomerata, festuca rubra, hypochaeris radicata, jacobaea erucifolia, rumex acetosa, rumex obtusifolius, urtica dioica, veronica persica