POISONOUS WEEDS 



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plant, from two to five feet high, bearing large leaves. It has 

 white or purplish flowers, and later bears a four-valved seed pod 

 containing many hundred seeds. These plants contain a powerful 

 poison, and children, through ignorance, are sometimes made 

 seriously ill by eating the seeds or other parts. 



Wright Pierce 

 A field of lupines. These are useful plants, as they give nitrogen to the soil. 



Useful weeds. Some weeds are not harmful, but are beautiful 

 or useful in some ways. The daisy in New York, and the filaree in 

 California, are dear to those who love flowers. Water cress, dande- 

 lion, and some other weeds are used as food, and certain weeds are 

 used for medicinal purposes. Plowed under they may act as 

 fertilizer, and in some places they form a protective covering over 

 the soil, thus preventing it from being washed away. 



Practical Exercise 2. 

 in your community. 



Discuss the different methods of weed control used 



