Early detection of leaf diseases can save your plants from irreversible damage, and visual identification plays a key role in timely intervention. This guide presents essential leaf diseases with clear pictures and their scientific names, helping gardeners and plant enthusiasts diagnose issues accurately.
Leaf Spot Diseases – Common fungal infections like "Black Spot" (known as "Rust Spot") manifest as circular brown or black lesions, often with yellow halos, commonly affecting roses and roses. Another example is "Powdery Mildew," visible as a white, powdery coating on leaves, prevalent in cucumbers and zucchini.
Rust Diseases – Often mistaken for fungal issues, true leaf rusts appear as vibrant orange or rust-colored pustules, such as "Pine Rust" on conifers or "Wheat Rust" in ornamental grasses. These appear as raised, irregular spots with spores.
Chlorosis & Necrosis – Yellowing (chlorosis) or dead tissue (necrosis) may signal nutrient deficiencies or viral infections like "Leaf Curl Virus," which distorts leaf shape and causes stunted growth.
Each disease presents distinct visual patterns, and pairing these leaf disease pictures with scientific names empowers proactive care. Whether you're tending a garden or caring for houseplants, visual guides combined with accurate terminology are essential. Take action now—identify the problem early with these trusted references and protect your greenery effectively.
Let's begin! Types of Leaf Diseases Below are some of the most common types of leaf diseases you will often see in your plants if you don't take good care of them: 1. Leaf Spots Leaf spots, also known as leaf blotch, anthracnose, shot hole, and scab, are typically obvious spots, characterized by alternating shapes, sizes, and shadings. The five common plant leaf diseases, including leaf spot, rust, and blight, and provides expert treatment options to treat them effectively.
Diseases Identification by Plant Type Numerous plant diseases exist, mainly distributed among such plants as peas, potatoes, buckwheat, grasses, hemp, corn, flax, alfalfa, sunflower, rice, soybeans, tobacco, shag, sainfoin, and many others. Plant disease identification effectively addresses the negative factor that impedes the plant's growth. These pictures of tree diseases and the worst pests will help you identify symptoms and damage, along with solutions to the problems you may have.
These image galleries have been arranged by the part of the host plant affected and by common name. Each page may include multiple causal agents or crops. You can also try searching for disease or pathogen names in the search box (at the top of the right-hand column on this page).
Leaf diseases Ascochyta blight. Plant diseases are a fact of life for gardeners. Learn how to deal with the most common plant ailments and how to keep them from ruining your garden.
Leaf Spots Warm air temperature and days of rain can lead to leaf spot diseases on many different plants, including flowers, vegetables, trees, shrubs and herbs, like this golden oregano. Leaf spots originate with bacteria or fungus, both of which reside in soil or on nearby plants. This page is designed to help identify some of the more common plant diseases and provides earth.
Leaf spot diseases are fungal and bacterial infections that cause discolored lesions or spots on the leaves of affected plants. Plant Disease Images Forward/Disclaimer The images on this website are the property of the authors and may not be used without permission. All images were taken from samples received at the University of Maine Plant Diagnostic Clinic.
Where image file names begin with a nine-digit number, this number refers to a specific sample entered into the PDIS database and, therefore, all images prefixed.