echinochloa crus-galli, hibiscus trionum, zea mays, setaria pumila, datura stramonium, elymus repens, acer negundo, amaranthus retroflexus, galium aparine, geranium pusillum, mercurialis annua, amaranthus powellii, arctium tomentosum, atriplex patula, ballota nigra, thlaspi arvense