Mystery Seed

http://www.zeldauniverse.net/images/stories/games/z7/items/mysteryseed.gif

Mystery Seeds are Mystical Seeds with a very strange effect. When placed on Owl Statues, they bring the statues to life! They also cause weird things to happen when placed on enemies and other things. Try putting them on just about anything you meet.

They grow on Mystery Seed Trees. In Holodrum, these trees produce seeds during all the seasons.