Texas Plant Disease Diagnostic Lab
The Texas Plant Disease and Diagnostic Lab at Texas A&M University will test samples of diseased leaves from trees/shrubs and samples from lawns showing possible signs of disease. Please read the directions for payment and collection of samples. NOTE: They do not want DEAD LEAVES! Living tissue is best for diagnostic purposes. For a lawn sample, a 4"-6" divot with about 1" of soil/roots taken from the area NEXT TO the affected area (transition zone) is preferred to sending a sample of dead grass. Tree/shrub leaves that are just beginning [...]