Photo 6: London planetree is a favored street tree because it is relatively pest-free and highly tolerant of urban conditions. This has resulted in overplanting in some areas. Although the fungus has been reported throughout North America, Massaria has [...]

Reduction of excess soil and mulch around a young tree trunk. All photos courtesy of the authors. The information in our first article (published in the March 2026 issue of TCI Magazine) hopefully established biochar as a scientifically [...]

Grace Ditch of Tree133 prepares a large American elm for macro-infusion to protect against Dutch elm disease, a vascular wilt pathogen. Photo courtesy of Craig Bachmann. Plant health care (PHC) is evolving. What was once often approached as [...]

Photo by Rene Notenbomer/iStock In Part I of this series on the application of biochar into urban soils (published in the March 2026 issue), we discussed how research science clearly supports biochar as a powerful soil enhancement. However, [...]