When I worked in horticulture years ago, I learned an invaluable truth: “A weed is an undesirable plant.” Think about it. A weed is a plant, perhaps replete with shiny green leaves and colorful flowers, alluring in its own right—just like other plants. Yet, there is that word “undesirable.” How so? Well, a prominent attribute of a weed is that it is invasive. A weed saunters into the garden, surveys all of the beauty, and says, “I am taking over.” The prideful weed chokes out beauty and creates aesthetic chaos. A weed demands control.