How to Use "weed" with Example Sentences

1. Bill curran is a professor of weed science at penn state .
2. Weed scientists are urging farmers to alternate glyphosate with other herbicides .
3. Will you help me weed the garden ?
4. Striga is a parasitic weed that africans commonly call witchweed .
5. A weed is any a plant growing where you don 't want it .