UMass Extension Weed Herbarium

Plant Problem Diagnostics

Misdiagnosed or incompletely understood tree and shrub problems can waste valuable time and money. Landscape trees and shrubs develop problems for a variety of reasons. UMass Extension's Plant Diagnostic Lab has experience in identifying the causes of discolored leaves, early leaf loss, death of branches, and other damage that disrupts plant growth. The causes of these symptoms include cultural and environmental factors as well as disease and insects. In addition to diagnosing the problem, we'll suggest what to do to correct the trouble or reduce future damage from it.

UMass Diagnoses Plant Problems

The University of Massachusetts Amherst recognizes the importance of reliable and prompt diagnosis of plant problems for the turf, floriculture, fruit, vegetable, nursery, urban forestry and landscape industries. The UMass Extension Plant Diagnostic Lab exists to serve farmers, horticulturists, landscape contractors, turf managers, arborists, nurseries, and others in agriculture and the green industries. All of our plant diagnostics expertise has recently been integrated into one location on the UMass Amherst campus. The diagnostics team of the UMass Extension Plant Diagnostic Lab are able to call upon each other’s expertise to make fast and accurate diagnoses.

For complete information about all available diagnostic services, including sample submission instructions and testing fees, see: