This article is a list of diseases of geraniums (Pelargonium).
Aspergillus fischerianus Diaporthe rudis = Diaporthe medusaea Botryosporium pulchrum Alternaria alternata = Alternaria tenuis Cercospora brunkii Bipolaris setariae Cochliobolus setariae [teleomorph] Bipolaris maydis Cochliobolus heterostrophus [teleomorph] Ascochyta spp.
Discohainesia oenotherae Pleosphaerulina spp.
Colletotrichum gloeosporioides Glomerella cingulata [teleomorph] Phyllosticta spp.
Cylindrocladium scoparium Calonectria kyotensis [teleomorph] Rhizoctonia solani Thanatephorus cucumeris [teleomorph] Verticillium albo-atrum Verticillium dahliae Cucumber mosaic virus Tobacco mosaic virus Impatiens necrotic spot virus Tobacco rattle virus Tobacco ringspot virus Aphelenchoides coffeae Aphelenchoides fragariae Pratylenchus pratensis Tylenchorhynchus dubius Xiphinema americanum Meloidogyne arenaria Meloidogyne hapla Meloidogyne incognita