Purdue Tree Doctor is an educational app developed by Purdue University, designed to assist in identifying and managing tree issues caused by various factors like insects and diseases. Targeted towards landscape professionals, arborists, and garden center personnel, this app enhances communication with customers. The app's information is particularly relevant for the Midwestern and Eastern United States.

With over 1000 high-resolution photos, users can identify tree problems by matching damaged plant parts. Detailed descriptions of damage and stages of problem development, linked to each photo, aid in accurate diagnoses. Additionally, the app offers unbiased recommendations from Purdue University experts on managing over 175 tree problems across more than 60 tree species, accessible by search options based on tree type or pest.