My walnut tree doesn’t produce walnuts. How can I help it along?

Question

I have a walnut tree with very healthy and prolific branch and leaf growth but doesn’t yet produce any walnuts unfortunately. Does it need other walnut trees nearby to fertilise it? I don’t know it’s age but it is about 4m high. Any advice would be very welcome, thanks.
Mike W.

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Answer 1

Our experts say walnut trees don't start really producing until they're around ten years old. https://www.gardeningknowhow.com/edible/nut-trees/walnut/planting-walnut-trees.htm.