Diseases of Primulas
English primrose Primula vulgaris Huds. (P. acaulis), Polyanthus Primula Pruhonicensis hybrids, Fairy primrose P. malacoides Franch., German primrose P. obconica Hance, Chinese primrose P. sinensis Sabine ex Lindl.

Bacterial fasciation: Rhodococcus fascians (Tilford 1936) Goodfellow 1984, comb. nov.
Bacterial soft rot: Erwinia carotovora subsp. carotovora (Jones 1901) Bergey
et al. 1923; = Pectobacterium carotovorum subsp. carotovorum (Jones
1901) Hauben et al. 1999, comb. nov.
Crown gall: Agrobacterium tumefaciens (Smith and Townsend 1907) Conn 1942
Pseudomonas leaf spot: Pseudomonas cichorii (on P. elatior) (Swingle 1925) Stapp
1928; Pseudomonas syringae pv. primulae van Hall 1902

Anthracnose: Colletotrichum gloeosporioides (Penz.) Penz. & Sacc. in Penz.
Botrytis blight: Botrytis cinerea Pers.:Fr.
Phytophthora crown and root rot: Phytophthora cactorum (Lebert & Cohn) J. Schröt.; P. citricola Sawada; P. parasitica Dastur
Powdery mildew: Erysiphe polygoni DC.
Pythium root rot: Pythium irregulare Buisman; P. megalacanthum de Bary; P. spinosum Sawada; P. ultimum Trow
Ramularia leaf spot: Ramularia primulae Thuem.
Rhizoctonia root and crown rot: Rhizoctonia solani Kühn
Rust: Puccinia aristidae Tracy; Uromyces apiosporus Hazsl.

Bulb and stem nematode: Ditylenchus dipsaci (Kühn) Filipjev
Foliar nematode: Aphelenchoides fragariae (Ritzema Bos) Christie; A. ritzemabosi (Schwartz) Steiner & Buhrer
Lesion nematode: Pratylenchus sp.
Root-knot nematode: Meloidogyne hapla Chitwood; M. javanica (Treub) Chitwood; M. arenaria (Neal) Chitwood

Alfalfa mosaic: genus Alfamovirus, Alfalfa mosaic virus (AMV)
Cucumber mosaic: genus Cucumovirus, Cucumber mosaic virus (CMV)
Impatiens necrotic spot: genus Tospovirus, Impatiens necrotic spot virus (INSV)
Primula mosaic: genus Potyvirus, Primula mosaic virus (PrMV)
Primula mottle: genus Potyvirus, Primula mottle virus (PrMoV)
Tobacco necrosis: genus Necrovirus, Tobacco necrosis virus (TNV)
Tomato bushy stunt: genus Tombusvirus, Tomato bushy stunt virus (TBSV)
Tomato spotted wilt: genus Tospovirus, Tomato spotted wilt virus (TSWV)

Diseases of PrimulasEnglish primrose Primula vulgaris Huds. (P. acaulis), Polyanthus Primula Pruhonicensis hybrids, Fairy primrose P. malacoides Franch., German primrose P. obconica Hance, Chinese primrose P. sinensis Sabine ex Lindl.