Ness, E. 2015. Getting to the Root of Urban Tree Health. CSA News. Volume 60, Number 12. Pages 4-7

urban, Soil, Vegetation, Trees, Biosolids

https://dl.sciencesocieties.org/publications/csa/articles/60/12/4?highlight=&search-result=1

This article details the many elements that are required for healthy urban trees, with emphasis on soil health and biosolid usage.