Answer:
When young, I am sweet in the sun. When middle-aged, I make you gay. When old, I am valued more than ever.
What can be seen but never found that only hides in the unwound?
What is yellow, looks like the moon and has seeds?
What turns everything around but does not move?
It's the only vegetable or fruit that is never sold frozen, canned, processed, cooked, or in any other form but fresh
Brings the sky a lot closer.