Datura stramonium (Jimson Weed)
One of the most common of the “large weeds” we have in our yard is Jimson weed (Datura stramonium). It is pretty easy to spot, because if grows into a fairly large bush, surprisingly large for an annual. It has pretty, little, white flowers but it’s a mean plant in most other respects. First, it is covered with spines and you don’t want to be pulling it up without wearing substantial gloves. It’s also quite poisonous, containing dangerous levels of alkaloids. Because they have psychoactive effects and because they are also fatally toxic in only slightly higher amounts, Jimson weed is responsible for hospitalizations and deaths each year. Just pull it up and get rid of it, folks.