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Erysiphe elevata

Catalpa powdery mildew

Description

Erysiphe elevata is a fungal pathogen causing powdery mildew on catalpa trees. Originating from North America, it has spread to Europe, where it affects ornamental catalpa species. Catalpa powdery mildew Erysiphe elevata is most prevalent in warm, humid regions and thrives in late summer and fall. White, powdery fungal growth on leaves, stems, and sometimes flowers. Premature leaf drop, leaf yellowing, and reduced plant vigor. While generally not fatal, Erysiphe elevata can significantly weaken catalpa trees, reducing their aesthetic value and making them more susceptible to other stresses. The fungus poses a threat to ornamental plantings of catalpa, especially in parks and gardens across Europe, where it can negatively impact the tree's health and appearance

Symptom

White, powdery fungal growth on leaves, stems, and sometimes flowers. Premature leaf drop, leaf yellowing, and reduced plant vigor.

Tree Species: Catalpa

Part of a plant- attacked: Leaf / Needle, Branch

Pest significance: Harmful

Pest Category: Fungi

Invasive Species: Yes

Present in EU: Yes

Last observations

There are a total of 4 observations of the species in the system

Erysiphe elevataCatalpa powdery mildew
milan
Number of votes: 0
Published: 22.8.2025

Erysiphe elevataCatalpa powdery mildew
milan
Number of votes: 0
Published: 10.8.2025

Erysiphe elevataCatalpa powdery mildew
milan
Number of votes: 0
Published: 3.8.2025

Erysiphe elevataCatalpa powdery mildew
Petra Busova
Number of votes: 0
Published: 23.6.2023