2 years ago we planted a lime tree in our backyard. It was already about 5-6 feet tall when we planted it. There's a lemon tree next to it that is probably 50 years old and produces more fruit than we can use. We're constantly giving away lemons to our friends and neighbors, baking stuff with the ones we keep and we still too many left! But our lime tree barely produces anything. The first year it produced 3 limes, all of which were hard and almost juiceless. This year, so far it has produced a single fruit which doesn't yet look ripe. The thing is that it produces tons of buds that look like they're going to become limes, but they either die or are eaten by squirrels, I guess. I've heard a similar story from a coworker about her lime tree. Is there any secret to getting a lime tree to produce fruit?