xanthium strumarium, helianthus tuberosus, agrostis stolonifera, equisetum arvense, deschampsia cespitosa, elymus pungens, amorpha fruticosa, artemisia vulgaris, bidens frondosa, echinochloa crus-galli, persicaria lapathifolia, plantago lanceolata, populus canadensis, rumex crispus, salix purpurea, solidago gigantea, tussilago farfara