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Walnut 'Black'
A very elegant spreading tree with valuable dark brown timber and highly prized nuts. Olive-green catkins are followed by 5cm walnuts in abundance. Suppresses undergrowth, so best grown on its own. Fast growth rate.
How to grow
Black walnuts can naturally exude Juglone from their root system, a substance that reduces plant growth in nearby plants. It is recommended to separate walnuts from your other orchard trees.