Introduction

Oak trees are majestic and long-lived specimens that provide beauty to landscapes while providing environmental benefits such as shade and improved air quality. However, it is important to be mindful of what is planted around them as certain plants can negatively impact the health of the oak tree. In this article, we will discuss what not to plant near oak trees.

The Impact of Companion Plants

Companion plants are used to enhance the beauty of a landscape while also providing functional benefits. However, when it comes to planting near oak trees, not all companion plants are created equal. Some plants can facilitate the spread of diseases, inhibit growth, or damage the tree's root system. Additionally, certain plants use resources that an oak tree requires for optimal growth such as water and nutrients. When selecting plants to coexist with oak trees, it is crucial to choose those that will not harm the tree.

Plants to Avoid

While many plants are suitable to grow near oak trees, some should be avoided. One plant that should not be planted near an oak tree is the black walnut. The black walnut secretes a chemical called juglone that can be toxic to oak trees, as well as many other plants. Additionally, a tree known as the southern red oak is especially sensitive to juglone and can suffer from leaf scorch, dropping leaves, and stunted growth if planted too close to a black walnut.

Another plant to avoid is the English ivy. Ivy is a vigorous climber that can damage the bark of an oak tree if it becomes too thick. Additionally, English ivy is an invasive species that can quickly spread, creating competition for resources.

Finally, the American chestnut is another tree that should not be planted near oak trees. While the American chestnut was once a popular tree in North America, it is now virtually extinct due to a disease called chestnut blight. Chestnut blight is caused by a fungus that can be spread to other trees through root grafting. Planting an oak tree near an American chestnut could risk the spread of this disease.

Plants to Plant

While some plants can be harmful to oak trees, others can actually benefit them. Proper companion planting can help maintain a healthy ecosystem for the tree while enhancing its aesthetic appeal. One plant that can be safely planted near oak trees is the fern. Ferns are shade-loving plants that can add a lush green covering to the ground underneath the oak tree's canopy. Additionally, ferns do not compete with the tree's root system, making them a low-maintenance option.

Another plant that can be beneficial to oak trees is the dogwood. Dogwood trees are understory trees that can thrive in the dappled shade beneath an oak tree. The dogwood's shallow root system makes it less likely to compete with the oak tree for resources. In addition, dogwoods provide long-lasting blooms in the springtime, adding a burst of color to the landscape.

Conclusion

When selecting companion plants for an oak tree, it is important to choose those that will not harm the tree. It is essential to avoid planting poisonous plants such as black walnut and invasive vines such as English ivy. Instead, opt for shade-loving plants that will complement the oak tree's beauty while not competing for resources. By following these guidelines, you can create a harmonious ecosystem around your oak tree that benefits both the tree and the landscape.