Black walnut tree showing leaves and branches.

Black Walnut

The black walnut tree (Juglans nigra) is a native species that grows in the wild throughout much of the eastern United States. It has been cultivated for its wood since colonial times. But if you want to plant one or more on your own property, you may encounter some challenges.

You to need to consider space requirements, cultivar selection, and the effects of juglone, a herbicidal chemical exerted by black walnut roots, on nearby plantings. Read our guides down below to find all the information that you need to know to successfully grow your own black walnut trees and harvest delicious nuts.

33 of the Best Plants to Grow Under Black Walnut Trees

A close up of the foliage and developing nuts of a black walnut (Juglans nigra) tree.

Black walnuts and other landscape trees produce an allelopathic chemical called juglone, which can inhibit the growth of many plants in proximity. In this guide, we reveal 33 plants that are juglone-tolerant and suitable for growing under black walnut trees, including ornamentals, fruits, and vegetables. Read more now.

How to Grow and Care for Black Walnut Trees

A close up horizontal image of the fruit developing on a black walnut (Juglans nigra) tree pictured on a soft focus background.

Cold hardy, tolerant of a wide range of conditions, and an excellent timber tree to boot, black walnut is an easy nut tree to grow. What’s more, this striking tree is native to the eastern United States, inhabiting floodplains, roadsides, and forest edges. Tough, versatile, and productive – what’s not to love?

How to Identify and Control Walnut Husk Flies

Side profile of the walnut husk fly (Rhagoletis completa) on a gray background.

Walnut husk flies are damaging pests, particularly in California and Washington State. The flies pupate in the ground for 1-2 years and spend their larval stage hidden inside the husks. However, by monitoring the adults, you will know when to treat these pests before they lay their eggs. Read on to learn how to control these voracious insects.

Death by Black Walnut: The Facts on Juglone Toxicity

Is juglone toxicity from black walnuts a problem in your yard? |

Have you heard of juglone toxicity? This side effect of keeping black walnut trees may be killing your other plants. Learn what fruits and flowers can withstand living near the tree and how to properly treat sensitive plants with our owner’s guide on Gardener’s Path.