All images and videos in this Flickr collection are in the public domain (CC-zero), with most in high resolution. Most depict plant pests and diseases. Search by scientific or common names of host plants, by symptoms, disease names, plant pathogens, plant-parasitic insects, and biological control agents. Browse more than 750 thematic albums. Read the linked articles to learn about plant pest biology, ecology and management. (Scot C. Nelson, plant pathologist)