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Common plant diseases

Plant diseases in horticulture and agriculture are conditions or disorders that negatively affect the health and productivity of cultivated plants, including crops and ornamental plants. These diseases are caused by various pathogens, including fungi, bacteria, viruses, and nematodes, as well as environmental factors. Here's an overview of common plant diseases in both horticulture and agriculture. Looking for a specific species? Take a look at our plant disease overview.

Basal rot Fusarium oxysporum grown in petri dish

Fusarium spp.

Damage on tomato caused by powdery mildew

Powdery mildew

Erysiphe, Podosphaera, Oidium, Leveillula spp.

Tomato damage caused by Bacterial wilt of potato Ralstonia solanacearum

Bacterial wilt, brown rot

Ralstonia solanacearum

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Bacterial canker of tomato
Clavibacter michiganensis

Bacterial wilt, brown rot
Ralstonia solanacearum

Black leg of seedlings
Pythium ultimum

Crazy roots, hairy roots, crown gall
Rhizobium spp.

Downy mildew of Cucurbits
Pseudoperonospora cubensis

Fusarium spp.
Fusarium spp.

Fusarium wilt
Fusarium oxysporum

Grape downy mildew
Plasmopara viticola

Grapevine powdery mildew
Erysiphe necator

Grey mould
Botrytis cinerea

Gummy stem blight
Didymella bryoniae

Monilinia or brown rot of fruit
Monilinia spp.

Pepino mosaic virus
Potexvirus pepini

Powdery mildew
Erysiphe, Podosphaera, Oidium, Leveillula spp.

Rhizoctonia solani
Rhizoctonia solani

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