Question
Hi,
For a science fair project, I decided to see the affects on plants watered with coffee compared to water. I watered parsley and Sweet Marjoram. The Parsley watered with coffee grew very tall, but nothing else grew. What is in coffee that made the parsley grow so tall (nutrients, vitamins, etc.)? Thank you

Answer
The coffee bean is a seed, and so it must contain every nutrient that a plant needs to live, which includes 14-17 elements, depending on who you ask.  Certainly, when you make coffee, many of these elements end up in the brew, which would account for the increased growth of the Parsely.  I don't know why the other plants didn't respond to the coffee.

Trey