BY MICHAEL J. RAUPP, PH.D., AND PAULA M. SHREWSBURY, PH.D. In Part 1 of this article (TCI Magazine, October 2025), we introduced four foundational elements useful in diagnosing problems with trees and shrubs, represented by the acronym SPSD, and discussed the first “S,” which stands for “site,” and the “P,” which stands for “plant.” In part 2, we’ll discuss the second “S,” which stands for the “symptoms.” Knowledge of signs and damage symptoms is a powerful tool in making an accurate diagnosi...
Show more...