So to begin with roots we have to understand what kind of roots the Mesquite has and why. The Mesquite has
tap roots in order to dig deep into the ground to search for water and nutrients because of its habitat, the desert.
The root system is quite extensive and will spread far and wide to consume whatever moisture is available, sometimes to the detriment of other plantings near the tree. In areas where the soil is shallow, where water does not penetrate deeply, or where a distinct calcium carbonate layer is present, the taproot seldom extends more than 3 to 6 feet , and an extensive system of lateral roots often extends up to 60 feet away from the plant base. Another interesting fact about the roots is that the roots of the Honey Mesquite is capable of housing N2-fixing bacteria in nodes along its roots.
In order for the tree to get any nutrients mineral ions must be able to get into the root, they do this by Fungae Hyphae (mutualism), which diffuse the mineral ions from the water for the tree and assist it in entering the trees roots.
The roots not only allow for absorption of minerals and water, but the also assist the droopy branches and multiple trunks support the tree.
Those are the basics on the roots of this tree!
