Patience in Spring

Swinging in the hammock, 
the twins notice the rustling leaves of our fruit trees.
They ask their favourite question, what is this?
Calling them Isaac & Newton,
I’m inclined to say ‘gravity”
instead, I say that’s an apple tree.
Puzzled, they see no fruit in June,
I tell them to wait-soon it will grow. 
They stare at the leaves,
they both insist I want bite.
pretend to crunch on absent globes.
I suggest fresh spinach but they nod,
for now it holds no allure.
All I can offer are unripe bananas from afar,
key limes fit only for a pie.