|When should I prune meyer lemon trees which bore no blossoms or fruit this year.|
|Lack of sufficient sunshine or too much nitrogen fertilizer are about the only things that will stop a Meyer lemon tree from flowering. They typically produce flowers (and will have fruit in various stages of development) all year around. You can prune at anytime to remove overly long branches. Aside from that, citrus trees are not generally pruned.
Best wishes with your lemon tree.