I took this photo at the Home & Garden Fair I visited recently; and seeing the lemon tree there brought the old song to mind...
♫ When I was just a lad of ten, my father said to me,
"Come here and take a lesson from the lovely lemon tree."
"Don't put your faith in love, my boy", my father said to me,
"I fear you'll find that love is like the lovely lemon tree."
Lemon tree very pretty and the lemon flower’s sweet
But the fruit of the poor lemon is impossible to eat. ♫
Peter, Paul and Mary singing Lemon Tree
Listen at YouTube