Black Walnut 18-24" Seedlings

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Black Walnut 18-24" Seedlings

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Black Walnut

Juglans nigra

The Black Walnut is a grand tree that likes fertile rich hillsides where it is effective against erosion.  This tall tree produces walnuts for yourself and backyard wildlife.  A good shade tree, leaves turn a bright yellow color in autumn.  May self pollinate, but plant two or more to ensure proper pollination.  *Use caution if you plan on planting Black Walnut near existing trees as the roots produce a substance called juglone that can be toxic to other trees.  

  • Zones
    4 to 9
  • Soil Type
    Clay, Loamy & Sandy soils
  • Site Selection
    Full Sun
  • Mature Height & Width
    80' Height and 60' Spread
  • Growth Rate
    Slow to Medium - 10-18" per year on average
  • Moisture Requirements
    Moist but well drained soils

Product questions

  • victoria
    Aug 13, 2019, 20:51

    what type of cultivae is it?

    Aug 14, 2019, 13:02

    Juglans nigra is the scientific name of the native Black Walnut. It is not a cultivar.

  • elmer morgan
    Nov 2, 2017, 10:02

    How far away from other plants should I plant a Black Walnut seedling?

    Nov 2, 2017, 13:08

    Black Walnut trees produce a toxic substance called juglone, which prevents many plants from growing near them. Juglone exists in all parts of Black Walnut trees. The toxic effects of a mature Black Walnut tree can extend 50 to 80 feet from the trunk of the tree. The greatest toxicity occurs within the tree’s dripline. We recommend planting Black Walnut a minimum of 50 feet away from plants which do not tolerate juglone toxicity. Butternut and Hickory also produce juglone, but in lower concentrations than black walnut.

The Black Walnut is also sometimes known as the American Walnut.

The Black Walnut is a large tree that produces prized walnuts.  This tree does best on deep, fertile and well drained soils, but will tolerate clay and sandy soils as well.  

It is important to note that the roots of this tree generate a substance called juglone.  This substance can be toxic to other trees or plants planted near a black walnut and may even cause them to perish.  Contact your local county forester or university extension office for more information on acceptable trees and shrubs that will grow near this tree.

Common uses for the Black Walnut:

  • Grown for valuable timber
  • Lumber used in cabinets, floors, furniture and gun stocks
  • Personal or commercial walnut production for eating and cooking
  • Tall shade tree with beautiful fall color
  • Hillside erosion control
  • Good wildlife value

The Black Walnut is eaten by woodpeckers, squirrels and the red fox and a variety of birds. The tree is commonly used for perching or nesting of many types of birds

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