The World's Most Destructive Plant Diseases

(PG-13 language) Sam from the comedy-educational series, “Sam O’Nella Academy,” takes a humorous look at some of the most interesting and destructive plant diseases and parasites, including potato blight, chestnut blight, broomrape, and ergot.

“People who say money is the root of all evil are full of sh*t, they should try horseradish sometime.”