What Plants Can Tolerate Black Walnut Trees

Black walnut trees, scientifically known as Juglans nigra, are a popular, large deciduous tree that can be found throughout North America. These trees are known for their beautiful timber and delicious nuts, but they also have a reputation for being allelopathic, meaning that they produce a chemical called juglone that can be toxic to other plants. However, there are still many plants that can tolerate growing near black walnut trees. In this article, we will discuss some of the plants that can grow successfully near these trees.

Trees That Can Tolerate Black Walnuts

While many tree species can be sensitive to juglone, there are a few trees that can tolerate growing near black walnuts. Some species that are said to be tolerant of juglone include:

Red and white oak

Hickory

White ash

Basswood

Serviceberry

These trees have a relatively low sensitivity to juglone and can thrive in the presence of black walnuts.

Shrubs That Can Tolerate Black Walnuts

There are many shrubs that can grow happily under black walnuts, including:

Winterberry

Red twig dogwood

Black chokeberry

Bayberry

Virginia creeper

These shrubs are hardy and can tolerate the chemical released by black walnuts. They also add beautiful color and texture to gardens and landscapes.

Perennials That Can Tolerate Black Walnuts

There are many beautiful and diverse perennials that can tolerate the presence of juglone in the soil. Examples of such plants include:

Hostas

Astilbe

Daylily

Sedum

Ferns

These perennials are very hardy and can handle a wide range of growing conditions, including the presence of juglone in the soil.

Annuals That Can Tolerate Black Walnuts

While annuals only grow for one season, they add a burst of color and life to gardens and landscapes. Some annuals that can tolerate growing near black walnuts include:

Zinnias

Marigolds

Ageratum

Nasturtiums

Cosmos

These annuals are relatively hardy and can grow successfully near black walnuts. They are also typically easy to grow and maintain.

Conclusion

While black walnut trees can be toxic to other plants, there are still many plants that can tolerate growing near them. Trees, shrubs, perennials, and annuals can all thrive under the right conditions, and adding them to your garden or landscape can help create a diverse and beautiful environment.