Leo - Despite a certain member's costant senseless comments on a variety's productivity based on 2 or 3 year old trees, Lemon Zest is a very good producer.
Clint - The one drawback is that when it nears maturity, one must keep a close eye on the fruit. Once its shoulders color up to a true yellow (not lightening due to sun exposure), it can be picked. Caution is given that if left to continue to color, they become more susceptible to being knocked fro9m the tree from winds or storms. In other words, their stem connection weakens as they ripen. With that being said, if picked with too little color or before they color, they will be chalky, sour, wrinkle and be basically inedible.