silybum marianum, ballota nigra, carduus acanthoides, carduus pycnocephalus, descurainia sophia, nigella arvensis, rostraria cristata, rumex crispus, bromus sterilis, capsella bursa-pastoris, convolvulus arvensis, erigeron canadensis, euphorbia helioscopia, galium aparine, onopordum acanthium, papaver rhoeas, sisymbrium officinale, stellaria media