The best bean in the world is even better than you thought.
Jenny Chang for BuzzFeed
Blue your Blooms
Some flowering plants, like hydrangeas, change color depending on the pH level of the soil. Adding coffee grounds will reduce the pH level and give you bright blue flowers.
Keep the Slugs Away
Unlike worms, slugs, snails and other bugs don't like the acidity of coffee and won't cross the ground if it's sprinkled with java.
Grow Your Own Mushrooms
You can grow the funnest fungi around with just some coffee grounds and mushroom spores. Learn how here.