Protecting and Supporting Your Established Trees
When your tree reaches around 20-30 feet in size, planting additional nearby trees does not significantly enhance its stability, especially since the smaller trees' root systems are not substantial enough to provide adequate support. Instead, explore alternative methods to ensure your established tree remains stable and healthy.
Understanding Tree Stability
The larger the tree, the less reliance it should have on nearby smaller trees for stability. In nature, trees often grow in groves where their root systems intertwine to provide mutual support. However, when trying to support a single, established tree, horticulturalists recommend using specialized techniques and tools.
Proper Tree Support Methods
One effective method to support an established tree is by using ground anchors. These are horizontally positioned screws with loops at the top, secured in the ground by a metal pipe. Typically, three such anchors are used per tree, and they are placed on the side of greatest concern to prevent further movement of the tree.
The anchors are connected to the tree's trunk using steel cables. It is crucial to use protective sheaths, such as cut sections from an old garden hose, to prevent damage to the tree bark. Additionally, fluorescent orange or yellow strips tied at the center and around 1/4 way from the ground on the cables serve as visual markers to warn against accidental injuries.
Other Considerations for Tree Support
If you have an older tree that's already experiencing movement in high winds, it's important to first determine the cause before deciding on a support system. Instead of relying on nearby trees, consult with a tree expert to advise on the appropriate cable system or other forms of adequate support.
For those interested in creating a shelter belt, which might protect a tree from prevailing winds, it's important to realize that while planting smaller trees around the larger one can offer some protection, it has limitations. The taller part of the older tree that rises above the smaller trees will still be exposed to the force of the wind. Furthermore, planting new trees too close can damage the older tree's roots, potentially weakening its anchorage and cutting off its access to water and nutrients.
To sum up, when caring for and supporting your established tree, consider the use of ground anchors, cable systems, and consulting with professionals to ensure your tree remains healthy and structurally stable. Proper tree support is crucial for maintaining the longevity and beauty of your landscape.