Introduction

Walnut trees are commonly found in temperate regions around the world. They are known for their delicious nuts and their beautiful foliage. However, one challenge that gardeners face when planting near a walnut tree is finding plants that can grow under its shade. This article will explore the different types of plants that can tolerate the conditions under a walnut tree.

The harmful effects of the walnut tree

Before exploring the plants that can grow under a walnut tree, it's important to understand why this task is so challenging. Walnut trees release a chemical called juglone, which is toxic to many plants. The chemical is found in all parts of the tree, including the leaves, roots, and bark. When other plants come in contact with juglone, it can cause stunting, yellowing, or even death.

Plants that can grow under a walnut tree

Despite the challenges posed by juglone, there are still many plants that can thrive under a walnut tree. Here are some of the most popular:

Ferns: Many ferns, such as the lady fern or ostrich fern, can grow well under a walnut tree. They prefer a shady environment and can even help to improve the soil quality.

Hostas: Hostas are a great choice for planting under a walnut tree. They come in many different colors and sizes, and can tolerate the walnut's shade and soil.

Begonias: Begonias are a beautiful flowering plant that can grow well under a walnut tree. They prefer well-drained soil that is rich in organic matter.

Impatiens: Impatiens are another flowering plant that can tolerate the conditions under a walnut tree. They come in many different colors and can add a pop of brightness to your garden.

Liriope: Liriope is a tough, drought-resistant plant that can grow well under a walnut tree. It has long, green leaves that provide a great contrast to the walnut's dark bark.

Periwinkle: Periwinkle, also known as vinca, is a great ground cover plant that can tolerate the shade and soil conditions under a walnut tree. It has small, white or purple flowers that bloom in the spring and summer.

Tips for planting under a walnut tree

When planting under a walnut tree, there are a few things to keep in mind:

Test your soil: It's a good idea to test your soil before planting anything. Walnut trees prefer slightly acidic soil, so if your soil is too alkaline, you may need to add some sulfur to bring the pH down.

Choose plants wisely: As we've seen, there are many plants that can grow under a walnut tree. However, it's important to choose plants that are known to be tolerant of juglone. Do some research before you buy any plants, and make sure they are a good fit for your garden.

Plant away from the trunk: The highest concentration of juglone can be found near the trunk of the tree. To avoid this, plant your new plants at least 5 feet away from the trunk.

Consider adding organic matter: Walnut trees prefer soil that is rich in organic matter. Consider adding some compost or other organic matter to the soil around your new plants to help them thrive.

Conclusion

Although planting under a walnut tree can be challenging, it is possible to find plants that can thrive in this environment. By understanding the harmful effects of juglone, and choosing your plants wisely, you can create a beautiful garden that complements your walnut tree.