Compiled by Brian Hudelson and Dante Tauscheck

The following diseases/disorders were identified at the Plant Disease Diagnostics Clinic from March 21, 2026 through March 27, 2026.

 

 

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Broad-Leafed Woody Ornamentals

Plant:  Boxwood
Disease/Disorder:  Volutella Canker
Pathogen:  Volutella sp.
County:  Milwaukee

Plant:  Boxwood
Disease/Disorder:  Winter Burn (Suspected)
Pathogen:  None
County:  Milwaukee

Plant:  Lilac
Disease/Disorder:  Septoria Leaf Spot (Suspected)
Pathogen:  Septoria sp.
County:  Waukesha

Plant:  Rose
Disease/Disorder:  Pythium Canker
Pathogen: Pythium sp.
County:  Columbia

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Field Crops

No New Diseases

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Forage Crops

No New Diseases

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Fruit Crops

No New Diseases

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Herbaceous Ornamentals

Plant:  Dahlia
Disease/Disorder:  Crown Gall
Pathogen:  Agrobacterium tumefaciens
Counties:  La Crosse, Rock

Plant:  Black-Eyed Susan
Disease/Disorder:  Septoria Leaf Spot
Pathogen:  Septoria sp.
County:  Waukesha

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Houseplants

No New Diseases

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Needled Woody Ornamentals

No New Diseases

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Vegetable Crops

No New Diseases

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Specialty Crops

No New Diseases

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Miscellaneous

No New Entries

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