So you are probably doing science homework and you get to a question Why Does Coffee Effect the Growth of Plants?

Well, the question really is Why Does Caffeine Effect the Growth of Plants? The answer is because the caffeine in coffee effects the plants cytokenisis during late stages of mitosis and sometime meiosis.

When cytokinesis takes place; there are two separate nuclei, but they are in the same cell. The cell now needs to be split in half, and then it does. Cytokinesis is the final event of the cell division cycle the cell reproduction.

However it might be best to not feed your plants coffee due to additional ingredients other than caffeine. Therefore, you must be careful in feeding it tea as well. It is uncertain that caffeine is actually good for plants like steroids are not good for humans. Nevertheless it was stated that caffeine (not coffee itself) may protect plants even!

The answer in short to why do Coffee Effect the Growth of Plants? Is because it affects the cytokenisis.