Recently, our school had several fruit trees planted for decorative and educational purposes. Someone told us that we must carefully collect the fallen fruits and bury them to make sure that no one eats them. Is there really an orlah prohibition in chutz la’aretz, and is it possible that these fully grown trees are producing orlah fruits? If indeed we need to be concerned about orlah, do we also need to redeem the fruits of the tree in the fourth year?