There was a long since dead black walnut tree in our yard when we bought the house. We have taken the trunk down. Is it possible to plant another tree or other crop in this place? If so what would be some good suggestions? Is there something to ammend the site to weaken the allelopathic properties? If the site is not suitable for growing other plants I am considering putting our path throught the area.
there are quite a few trees and plants that grow under or near black walnuts. (dead ones too) around here mulberry works well and gives a good crop of fruit, biomass, coppice wood and more. if you Google black walnut tolerant plants you will get a good list of websites with plants and trees.
fungal decay is your best bet for "regenerating" the site for other plants. you could use wood chip mulch and chickens to increase biological activity below the soil. over time new species would thrive there.
putting a path or other physical element(patio,outdoor kitchen,coop, etc) is also a great idea given it flows into the design well.
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