Veronica rust – Puccinia veronicae-longifoliae

Pathogen: Puccinia veronicae-longifoliae

Hosts: Veronica longifolia and V. spicata

Symptoms: Bronze, purplish overcast on the upper surface of infected foliage. Raised reddish brown pustules on the underside of the foliage. Under severe disease severity significant foliar blighting occurs.

Spread: This disease was introduced to Michigan in 2004 and was found again in 2005. The disease occurred on field grown Veronica. To date it has been a problem in very few nurseries. Long distance disease spread is thought to occur with movement of infected propagation material. Spores, produced on foliage are carried by wind currents.

Management: Carefully inspect incoming plant material for signs of rust, pay particular attention to material that originated off shore. Plants with rust pustules or other disease symptoms should be destroyed. Fungicide applications are needed for disease control in some situations. Resistance development is a concern with this pathogen, follow recommended fungicide resistance management strategies.

Field planting of Veronica infected with rust
Veronica plant infected with Puccinia veronicae-longifoliae
Rust pustules visible on underside of Veronica leaf

For more information visit:

Plant & Pest Diagnostics

Other Documents in this Series

Accessibility Questions:

For questions about accessibility and/or if you need additional accommodations for a specific document, please send an email to ANR Communications & Marketing at

Michigan State University Michigan State University Close Menu button Menu and Search button Open Close