Black Walnut Trees
Q.

Walnut tree no nuts

Zone Maine,04974 | Dodgedaddie added on December 8, 2016 | Answered

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

A.
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Alisma
Certified GKH Gardening Expert
Answered on December 9, 2016

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/

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