As a gardening and landscaping expert, I have encountered this question many times before and I understand the concerns that come with it. The idea of putting gravel over tree roots may seem like a simple solution for a neat and tidy landscape, but it can actually have negative effects on the health and growth of the trees.
One of the main issues with putting gravel over tree roots is that it can compact the soil. Trees rely on oxygen in the soil for their roots to function properly, and compacted soil restricts the flow of oxygen. This can lead to root suffocation and ultimately hinder the tree’s ability to absorb nutrients and water, stunting its growth and overall health.
Furthermore, gravel can also cause the soil to heat up more quickly in the summer. The small stones absorb and retain heat, creating a warmer environment around the tree roots. This excessive heat can be detrimental to the roots, causing them to dry out and potentially leading to root damage or even death of the tree.
However, if you still wish to use gravel in your landscape, there are precautions you can take to minimize the negative impacts. One option is to cover the tree roots with landscape fabric before spreading the gravel. This fabric acts as a barrier, preventing the gravel from directly contacting the roots and minimizing compaction.
When applying the gravel, it is important to spread no more than two inches of it. This thin layer allows for better airflow and drainage around the tree roots, reducing the risk of compaction. It is crucial to avoid piling up the gravel around the base of the tree, as this can create a “volcano effect” where water accumulates and the trunk can become susceptible to rot.
In my own experience, I have seen cases where individuals have used gravel over tree roots without taking these precautions. Unfortunately, the trees suffered as a result, showing signs of stress and decline. In some cases, the trees had to be removed altogether.
To summarize, while it is not recommended to put gravel over tree roots, if you choose to do so, it is essential to take steps to minimize the negative impacts. Covering the roots with landscape fabric and spreading no more than two inches of gravel can help maintain the health and well-being of the trees. However, it is important to consider alternative landscaping options that prioritize the long-term health of the trees and the overall sustainability of your landscape.
