Images of plants
Hello, and thanks for using the Ask an Expert System.
There are numerous sources of photos of individual diseased vegetable plants, but not many sources that cover all common vegetables.
Cornell University has a series of vegetable garden fact sheets with photos that can be accessed from a single web page at http://vegetablemdonline.ppath.cornell.edu/cropindex.htm
Three universities in the Northwest have compiled a Photo Gallery of Vegetable Problems. You can find this gallery at http://mtvernon.wsu.edu/path_team/diseasegallery.htm
You might want to stop by the Centre County Penn State Extension office in Bellefonte. They have a wealth of Penn State Extension publications available for the public. You will find information on location, hours, and methods to contact them at