Wisconsin Disease Almanac – June 27, 2025

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Compiled by Brian Hudelson and Dante Tauscheck

The following diseases/disorders were identified at the Plant Disease Diagnostics Clinic from June 21, 2025 through June 27, 2025.

 

 


Broad-Leafed Woody Ornamentals Icon

Broad-Leafed Woody Ornamentals

Plant:  Crabapple
Disease/Disorder:  Apple Scab
Pathogen:  Venturia inaequalis
Counties:  Dane, Waukesha

Plant:  Crabapple
Disease/Disorder:  Fire Blight
Pathogen:  Erwinia amylovora
County:  Buffalo

Plant:  Crabapple
Disease/Disorder:  Sphaeropsis Canker
Pathogen:  Sphaeropsis sp.
County:  Dane

Plant:  Maple (Unspecified)
Disease/Disorder:  Wood Rot (Suspected)
Pathogen:  Unspecified wood rot fungus
County:  Eau Claire

Plant:  Oak (Red)
Disease/Disorder:  Herbicide Damage
Pathogen:  None
County:  Dane

Plant:  Oak (Swamp White)
Disease/Disorder: Chlorosis
Pathogen:  None
County:  Dane

Plant:  Serviceberry
Disease/Disorder:  Cedar-Quince Rust
Pathogen:  Gymnosporangium clavipes
County:  Dane

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Field Crops Icon

Field Crops

No New Diseases

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Forage Crops Icon

Forage Crops

No New Diseases

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Fruit Crops Icon

Fruit Crops

Plant:  Apple
Disease/Disorder:  Cytospora Canker
Pathogen:  Cytospora sp.
County:  Waupaca

Plant:  Apple
Disease/Disorder:  Fire Blight
Pathogen:  Erwinia amylovora
County:  Waupaca

Plant:  Apple
Disease/Disorder:  Fusarium Canker
Pathogen:  Fusarium sp.
County:  Waupaca

Plant:  Apple
Disease/Disorder:  Fire Blight
Pathogen:  Erwinia amylovora
County:  Waupaca

Plant:  Apple
Disease/Disorder:  Nectria Twig Blight
Pathogen:  Nectria sp./Tubercularia sp.
County:  Waupaca

Plant:  Apple
Disease/Disorder:  Cold Injury (Suspected)
Pathogen:  None
County:  Marathon

Plant:  Strawberry
Disease/Disorder:  Fusarium Wilt
Pathogen:  Fusarium oxysporum
County:  Eau Claire

Plant:  Cherry
Disease/Disorder:  Bacterial Canker
Pathogen:  Pseudomonas syringae
County:  Oneida

Plant:  Cherry
Disease/Disorder:  Cold Injury (Suspected)
Pathogen:  None
County:  Oneida

Plant:  Raspberry
Disease/Disorder:  Anthracnose
Pathogen:  Elsinoe necator
County:  Dodge

Plant:  Raspberry
Disease/Disorder:  Cane Blight
Pathogen:  Leptosphaeria coniothyrium
County:  Dodge

Plant:  Raspberry
Disease/Disorder:  Root Rot
Pathogen:  Cylindrocarpon sp.
County:  Dodge

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Herbaceous Ornamentals Icon

Herbaceous Ornamentals

No New Diseases

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Houseplants Icon

Houseplants

No New Diseases

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Needled Woody Ornamentals Icon

Needled Woody Ornamentals

Plant:  Arborvitae
Disease/Disorder:  Phyllosticta Needle Blight
Pathogen:  Phyllosticta sp.
County:  Dane

Plant:  Arborvitae
Disease/Disorder:  Water Stress (Suspected)
Pathogen:  None
County:  Dane

Plant:  Juniper
Disease/Disorder:  Diplodia Shoot Blight and Canker
Pathogen:  Diplodia sp.
County:  Dane

Plant:  Juniper
Disease/Disorder:  Winter Burn (Suspected)
Pathogen:  None
County:  Waukesha

Plant:  Pine (Scots)
Disease/Disorder:  Diplodia Shoot Blight and Canker
Pathogen:  Diplodia sp.
County:  Fond du Lac

Plant:  Pine (Scots)
Disease/Disorder:  Pine-Oak Gall Rust
Pathogen:  Cronartium quercuum f. sp. banksianae
County:  Fond du Lac

Plant:  Pine (Scots)
Disease/Disorder:  Water Stress (Suspected)
Pathogen:  None
County:  Fond du Lac

Plant:  Pine (Swiss Stone)
Disease/Disorder:  Phomopsis Canker
Pathogen:  Phomopsis sp.
County:  Dane

Plant:  Spruce (Unspecified)
Disease/Disorder:  Rhizosphaera Needle Cast
Pathogen:  Rhizosphaera kalkhoffii
County:  Dane

Plant: Spruce (Unspecified)
Disease/Disorder:  Winter Burn 
Pathogen:  None
County:  Door

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Vegetable Crops Icon

Vegetable Crops

Plant:  Garlic
Disease/Disorder:  Aster Yellows
Pathogen:  Aster Yellows Phytoplasma
County:  Pierce

Plant:  Potato
Disease/Disorder:  Black Leg
Pathogens:  Pectobacterium carotovorum subsp. carotovorum, Pectobacterium parmentieri
County:  Carroll (IL)

Plant:  Tomato
Disease/Disorder:  Herbicide Damage
Pathogen:  None
County:  Outagamie

Plant:  Zucchini
Disease/Disorder:  Herbicide Damage
Pathogen:  None
County:  Outagamie

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Specialty Crops Icon

Specialty Crops

No New Diseases

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Miscellaneous Icon

Miscellaneous

Mushroom ID:  Glistening Inky Cap (Coprinellus micaceus) 
County: Eau Claire

Mushroom ID:  Scotch Bonnet (Marasmius oreades) 
County:  Waukesha

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