When it comes to planting near black walnut trees, it is important to choose plants that are tolerant of the tree’s allelopathic effects. Black walnut trees release a chemical called juglone, which can inhibit the growth of many plants. However, there are some plants that have developed a natural resistance to juglone and can thrive near black walnut trees.
One category of plants that can be planted near black walnut trees is grasses. Most grasses, such as Kentucky bluegrass, fescue, and ryegrass, are tolerant of juglone and can handle the conditions near black walnut trees. These grasses can create a nice green groundcover and provide a contrasting backdrop to the dark foliage of the walnut tree.
For flowering plants, there are several options that can coexist with black walnut trees. Aster is a great choice, as it is not affected by juglone and can add a burst of color to the garden. Shasta daisies are also juglone-tolerant and can create a beautiful display of white flowers. Vinca, also known as periwinkle, is another option that can thrive near black walnut trees and provide lovely groundcover with its evergreen leaves and blue flowers.
Hostas are a popular choice for shade gardens, and fortunately, they are also tolerant of juglone. These leafy perennials come in a variety of sizes and colors, making them a versatile plant for any garden. Phlox is another shade-loving plant that can tolerate juglone and add vibrant colors to the landscape.
If you’re looking for vines to grow near black walnut trees, wisteria is a great option. This stunning flowering vine can climb up the tree and create a beautiful cascade of purple or white flowers. Morning Glory is another vine that can tolerate juglone and add a splash of color with its trumpet-shaped flowers.
For groundcover options, consider ajuga. This low-growing plant with its colorful foliage can spread and create a carpet-like effect near the base of the walnut tree. Solomon’s seal is another groundcover plant that can tolerate juglone and add an elegant touch with its arching stems and white flowers.
If you’re looking for a plant that can climb up the trunk of the walnut tree, Virginia creeper is a good choice. This vine can attach itself to the tree with its tendrils and create a lush green backdrop. It also turns a vibrant red in the fall, adding a pop of color to the landscape.
In my personal experience as a gardener, I have successfully planted asters, shasta daisies, phlox, and hostas near black walnut trees without any issues. These plants have thrived and added beauty to the garden despite the presence of juglone.
While black walnut trees can be challenging to plant around due to the presence of juglone, there are still many plant options available. By choosing juglone-tolerant plants such as grasses, aster, shasta daisy, vinca, hostas, phlox, wisteria, Morning Glory, ajuga, solomon’s seal, and Virginia creeper, you can create a diverse and beautiful garden even in the vicinity of black walnut trees. Happy planting!
