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Plant diseases
The common garden plant diseases, one page each: how to spot it, what it's often confused with, and what to do.
Mildews, spots and rusts
The ones you see on the leaves first.
Powdery mildew
Podosphaera and related fungi
Downy mildew
Peronospora, Plasmopara and related water moulds
Rose black spot
Diplocarpon rosae
Rust
Puccinia, Phragmidium, Uromyces and other rust fungi
Sooty mould
Capnodium and other surface fungi
Anthracnose
Colletotrichum and related fungi
Fruit and vegetables
Tomatoes, potatoes, cucurbits and berries.
Late blight
Phytophthora infestans
Early blight
Alternaria solani and Alternaria linariae
Blossom end rot
Mosaic virus
Cucumber, tobacco and tomato mosaic viruses
Grey mould
Botrytis cinerea
Roots, stems and seedlings
Problems that start below ground or at soil level.
Root rot
Phytophthora and Pythium
Damping off
Pythium, Rhizoctonia and other soil organisms
Fusarium wilt
Fusarium oxysporum
Verticillium wilt
Verticillium dahliae and Verticillium albo-atrum
Honey fungus
Armillaria species
Fruit trees
Peaches, apples, pears and citrus.
