English walnut trees (Juglans regia), also called Persian Walnut, are the standard of eating walnuts and are grafted onto either Paradox or NC Black Walnut tree rootstock. These large deciduous trees make nice shade trees as well as produce heavy crops of walnuts. Plant two varieties for the best nut production and plant in full sun. The walnut’s roots, leaves and nut shells release the compound juglone into the soil, which is toxic to some plants. Therefore those sensitive plants must be located 50-80 feet away from the trunk of the walnut. Trees are 2 years old, and should begin to fruit in their 5th year.
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