List of Geranium Diseases - Fungal Diseases

Fungal diseases
Armillaria root rot Armillaria mellea
Black root rot Thielaviopsis basicola
Blackleg

Cutting rot

 Pythium sp.
Botryosphaeria stem rot Botryosphaeria ribis
Botrytis blight Botrytis cinerea
Cottony stem rot Sclerotinia sclerotiorum
Damping-off

Pythium sp.
Rhizoctonia sp.
Downy mildew Peronospora conglomerata
Fusarium cutting rot Fusarium sp.
Glomerella stem rot Glomerella cingulata
Leaf mold

Aspergillus fischerianus
Diaporthe rudis
= Diaporthe medusaea
Botryosporium pulchrum
Leaf spot

Alternaria alternata
= Alternaria tenuis
Cercospora brunkii
Bipolaris setariae
Cochliobolus setariae
Bipolaris maydis
Cochliobolus heterostrophus
Ascochyta spp.
Discohainesia oenotherae
Pleosphaerulina spp.
Colletotrichum gloeosporioides
Glomerella cingulata
Phyllosticta spp.
Cylindrocladium scoparium
Calonectria kyotensis

Phytophthora root rot Phytophthora spp.
Powdery mildew Erysiphe communis
Pythium root rot Pythium spp.
Rhizoctonia root and crown rot

Rhizoctonia solani
Thanatephorus cucumeris

Rust Puccinia pelargonii-zonalis
Verticillium wilt

Verticillium albo-atrum
Verticillium dahliae

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