What should be avoided around existing native oak trees to ensure their health?

Avoiding changes in drainage around existing native oak trees is critical for their health. Oak trees, particularly native species, have adapted to their specific local environments, which include established drainage patterns. Alterations to the drainage can lead to either excess water or drought conditions that are detrimental to their growth and longevity.

When drainage is changed, it can affect the soil moisture levels, leading to root rot or stress from dehydration. The roots of oak trees also depend on a certain balance of moisture and aeration; too much water can suffocate the roots, while too little can inhibit nutrient uptake.

In contrast, proper irrigation when managed correctly can support the health of oak trees, natural mulching can help retain moisture and regulate temperature, and controlled fertilization can provide necessary nutrients without overwhelming the tree. Thus, it is changes in drainage that should be stringently avoided to protect the health of native oak trees.