Sonchus brachyotus DC.

are host of

• Global Biotic Interactions: Septoria sonchifolia Cooke 1878
• Global Biotic Interactions: Ramularia inaequale
• Global Biotic Interactions: Bremia sonchicola
• Global Biotic Interactions: Ramularia sonchi Dominik
• Global Biotic Interactions: Golovinomyces sonchicola U. Braun & R. T. A. Cook 2009
• Global Biotic Interactions: Golovinomyces cichoracearum (DC.) V. P. Heluta 1988
• Global Biotic Interactions: Cystiphora sonchi (Vallot 1827)
• Global Biotic Interactions: Spermosporina sonchi-oleracei (Fautrey) U. Braun 1993
• Global Biotic Interactions: Miyagia pseudosphaeria (Mont.) Jørst. 1962
• Global Biotic Interactions: Puccinia littoralis Rostr. 1876
• Global Biotic Interactions: Miyagia pseudosphaeria (Mont.) Jørst. 1962
• Global Biotic Interactions: Miyagia pseudosphaeria (Mont.) Jørst. 1962
• Global Biotic Interactions: Miyagia pseudosphaeria (Mont.) Jørst. 1962
• Global Biotic Interactions: Miyagia pseudosphaeria (Mont.) Jørst. 1962
• Global Biotic Interactions: Puccinia cnici-oleracei Pers. 1823
• Global Biotic Interactions: Miyagia pseudosphaeria (Mont.) Jørst. 1962
• Global Biotic Interactions: Bremia lactucae
• Global Biotic Interactions: Podosphaera tridactyla (Wallr.) de Bary 1870