Green Apples, Caffeine, and Corn

The Plantrama duo discuss caffeine as an insecticide, and talk about corn, which is a grass and a great deal more. The episode ends with a discussion of picking green apples. :36    True or False:      Caffeine is a natural insecticide. 7:42    Eat/Drink/Grow:  Corn: it's a vegetable! It's a biofuel! It's livestock food! It's an autumn decoration! 18:49   Love Letters and Questions:  Mary wrote to ask about picking green apples.