Introduction

When it comes to gardening, one of the most important factors to keep in mind is proper plant placement. While some plants grow well next to each other, others can be detrimental to their neighbors' growth. In particular, planting certain species near a walnut tree can be disastrous. In this article, we will explore what plants should not be planted near a walnut tree.

The Toxicity of the Walnut Tree

Walnut trees are known to release a toxic substance called juglone, which is found in their leaves, roots, and in the walnut fruit. Juglone is a natural defense mechanism employed by the walnut tree to prevent other plants from growing too close to it. Unfortunately, juglone can cause severe damage to neighboring plants, and even kill some species.

Common Plants That Do Not Grow Well Near Walnut Trees

One plant that should not be planted near walnut trees is the tomato plant. Tomatoes are extremely susceptible to juglone toxicity and can die quickly when grown too close to a walnut tree. Additionally, certain species of blackberries, blueberries, and raspberries are also sensitive to juglone, and can suffer stunted growth or death if placed near walnut trees.

Herbs and Vegetables to Avoid

When planting an herb or vegetable garden, it is important to consider the impact of juglone on these plants. Some common herbs, such as basil, chives, and mint, are known to be affected by juglone toxicity, and may not grow well when placed near walnut trees. Similarly, vegetables such as peppers, eggplants, and potatoes can also be negatively impacted by juglone.

Plants That Thrive Near Walnut Trees

While there are many plants that should not be planted near walnut trees, there are also several species that can thrive in their presence. One example is the hosta plant, which performs well in the shade cast by a walnut tree. Another is the fern, which can tolerate juglone toxicity and is an excellent choice for ground cover in the area surrounding a walnut tree.

Conclusion

In summary, it is important to be mindful of what plants should not be planted near a walnut tree. Juglone toxicity can severely impact neighboring plants, and compromise their growth and survival. By avoiding certain species and selecting plants that can thrive in the presence of juglone, it is possible to create a healthy, thriving garden even with a walnut tree as a neighbor.