Apples in Wisconsin
Wisconsin Fruit Crop Scouting Report: June 18, 2026
This post covers apple and grape phenology, general scouting observations, and includes an overview of degree day accumulation.
Notes from the Field: A Grower’s Perspective – Erin Warner #4
This week’s Notes from the Field follows Erin Warner with Warm Belly Farm in Cottage Grove and Fort Atkinson through early summer management challenges.
Adjusting Nutrient Management After Frost: Apple Blocks Carrying a Light Crop
This spring’s frost events left many Wisconsin apple blocks with a reduced crop, and the nutrient management priorities on those blocks are different from a normal year. With fewer fruit competing for resources, trees tend to push more vegetative growth, and the fruit that did set grows larger.
Wisconsin Orchard Update: Secondary Apple Scab and Marssonina Leaf Blotch
As primary apple scab season winds down across Wisconsin, many growers are beginning to ask an important question: Can I reduce my focus on scab and start thinking about summer diseases? The answer depends largely on whether active scab lesions are present in the orchard.
Grapes in Wisconsin
Wisconsin Fruit Crop Scouting Report: June 18, 2026
This post covers apple and grape phenology, general scouting observations, and includes an overview of degree day accumulation.
Berries in Wisconsin
Strawberry Disease Concerns Following Heavy Rains During Harvest
Recent rainfall across Wisconsin has provided much-needed moisture for crops, but it has also created favorable conditions for several important strawberry diseases. As growers move through harvest, periods of prolonged leaf wetness, high humidity, and frequent rain events can increase losses from fruit rots while also setting the stage for foliar and crown diseases later in the season.
Disease Updates
Wisconsin Orchard Update: Secondary Apple Scab and Marssonina Leaf Blotch
As primary apple scab season winds down across Wisconsin, many growers are beginning to ask an important question: Can I reduce my focus on scab and start thinking about summer diseases? The answer depends largely on whether active scab lesions are present in the orchard.
Strawberry Disease Concerns Following Heavy Rains During Harvest
Recent rainfall across Wisconsin has provided much-needed moisture for crops, but it has also created favorable conditions for several important strawberry diseases. As growers move through harvest, periods of prolonged leaf wetness, high humidity, and frequent rain events can increase losses from fruit rots while also setting the stage for foliar and crown diseases later in the season.
Preparing for Summer Rot Diseases in Wisconsin Apple Orchards
Recent rainfall across Wisconsin has created favorable conditions for several important summer fruit rot diseases. As we move into the warm, humid months of the growing season, growers should begin shifting their focus from primary apple scab management toward protecting developing fruit from the rot pathogens that can cause significant losses at harvest and during storage.
Past disease resources and updates →
Insect Updates
Fruit Insect Report – June 17
Now that we’re in the midst of the growing season, caseload at the UW Insect Diagnostic Lab (IDL) is currently high. Recent cases at the IDL involving insects relevant to fruit crops are summarized in this report.
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Our bi-weekly in-season newsletter is designed for Wisconsin apple, grape, and berry growers.