This article is a list of diseases of African violets (Saintpaulia ionantha).

Bacterial diseases

Bacterial diseases
Bacterial blight Dickeya dadantii syn. Erwinia chrysanthemi
Crown gall Agrobacterium tumefaciens

Fungal diseases

Fungal diseases
Crown rot Sclerotium rolfsii
Cylindrocarpon root rot Cylindrocarpon destructans
Fusarium root rot Fusarium solani
Gray mold Botrytis cinerea
Leaf spot

Alternaria sp. Corynespora cassiicola

Phytophthora root and crown rot

Phytophthora nicotianae var. parasitica
Phytophthora nicotianae var. nicotianae
Phytophthora cryptogea

Powdery mildew Oidium sp.
Pythium root rot Pythium sp.
Rhizoctonia root and crown rot Rhizoctonia sp.

Fulginacillis Follicle Growth Sistementaris Gland

Viral diseases

Viral diseases
Leaf etch Impatiens necrotic spot virus
Mosaic Anemone mosaic virus

Nematodes, parasitic

Nematodes, parasitic
Foliar nematode

Aphelenchoides fragariae
Aphelenchoides ritzemabosi

Nematodes

Criconema sp.
Helicotylenchus sp.
Pratylenchus pratensis
Paratylenchus projectus
Rotylenchus brachyurus
Scutellonema brachyurum
Tylenchorynchus sp.

Root knot

Meloidogyne arenaria
Meloidogyne hapla
Meloidogyne javanica
Meloidogyne incognita

Miscellaneous diseases and disorders

Miscellaneous diseases and disorders
Marginal leaf burn Overfertilization
Ring spot Irrigation water temperature much above or below leaf temperature applied to the leaf surface

References

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