Soil remediation is essential to root health, one of the most important but overlooked aspects of tree care. The soil in your garden or yard is probably not the most hospitable place for your roots to grow. In contrast to a forest floor, the soil on an urban or suburban property is likely to be highly compacted, anaerobic, arid, and lacking in nutrients.
Unfortunately, some of the things we do to help the soil in our yards actually just compounds the problem. For example, a typical spray irrigation system places a large volume of water quickly on the top layer of the soil. Even though a sprinkler can soak the top layer of soil, the weight of the water only compacts layers beneath, making saturation difficult or impossible.
Similarly, soil aerators of home landscapes only address the top inch of soil and do nothing for the deeper zones that a tree should be growing in. To improve the deep root zones for trees, we need to use products and methods that are designed for tree care.
A plan for the soil remediation for trees will include a vertical channel through the different soil horizons that can deliver water and oxygen to the deepest horizons. Remember that soil must have both oxygen and water in order to support root growth. Here (see video) we have a device installed in the root zone of a tree that penetrates the soil and breaks the barrier to water absorption and gas exchange.
Make sure they address both air and water penetration. That’s the basics of soil remediation for your trees!