Walnut tree no nuts

Question

I believe I have BLACK WALNUT growing. How long before I see flower/fruit? The age of tree, etc? Are they a self pollinating type tree?

Thanks

Answer 1

Black walnuts will not produce fruit and nuts until they are 10 years old. Black walnuts will sometimes self-pollinate, but this is inefficient, so more than one tree is required for optimal nut production.

Here is more about caring for black walnuts for nut production and other uses:
http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/growing-black-walnut/