This article is a list of diseases of black walnuts (Juglans nigra).
Gnomonia leptostyla Marssonina juglandis [anamorph] Cylindrocladium scoparium Calonectria kyotensis [teleomorph] Cylindrocladiella parva = Cylindrocladium parvum Fusarium sporotrichioides Fusarium solani Fusarium lateritium Fusarium oxysporum Mycosphaerella juglandis Cylindrosporium juglandis [anamorph] Phytophthora citricola Phytophthora cinnamomi Phomopsis arnoldiae = Phomopsis elaeagni Schizophyllum commune Hypochnicium vellereum Trametes versicolor Phellinus gilvus Peniophora cinerea Hericium coralloides Pratylenchus musicola Meloidogyne spp.