Grape Scouting Reports
MSU's grape team will be scouting vineyards and reporting the results through our grape scouting reports. MSU staff, educators and specialists in southwest and northwest Michigan will visit multiple vineyards, check growth stages, monitor traps and sample leaves and clusters. These reports will cover weather, grape phenology, disease and insect information and serve as a platform for us to announce meetings. These reports will be posted on Wednesdays every week throughout the growing season. We will add additional reports as specific issues come up through the season.
The free scouting reports will be included in MSU Extension’s News for the Grape & Wine Industry e-newsletter. If you are not already receiving MSU Extension News, you can sign up by entering your email address with MSU Extension News, then scroll down the list and click the box to select “Grape & Wine industry.” You can also click to select additional topics for other e-newsletters that may be relevant for you.
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Michigan grape scouting report – June 16, 2021
Published on June 16, 2021
Grape bloom has started in northern Michigan. Bloom is continuing on vinifera wine grapes in southern Michigan as well. -
Michigan grape scouting report – June 9, 2021
Published on June 9, 2021
Grape bloom has started in southern Michigan. Bloom on hybrid wine grapes and early vinifera should begin soon in northern parts of the state. Now is a critical time to control diseases. -
Michigan grape scouting report – June 2, 2021
Published on June 2, 2021
The heat from the past week helped grapes to move quickly. Shoots are lengthening throughout Michigan and clusters are becoming visible. -
Michigan grape scouting report – May 26, 2021
Published on May 26, 2021
Heat from the past week helped grapes move quickly. Shoots are lengthening throughout Michigan and clusters are becoming visible. -
MSU Extension’s grape scouting reports for 2021
Published on May 19, 2021
Michigan State University Extension will provide weekly reports of scouting efforts across the state, covering many parts of grape growing including vine phenology and horticultural updates, pest and disease management, and weather. -
Michigan grape scouting report – May 19, 2021
Published on May 19, 2021
This is the first of our weekly grape scouting reports covering the state of Michigan for 2021. Sign up to receive these reports by email. -
Michigan grape scouting report – Sept. 30, 2020
Published on September 30, 2020
Concord harvest has begun. This will be the last grape scouting report of the 2020 growing season. -
Michigan grape scouting report – Sept. 23, 2020
Published on September 23, 2020
Niagara harvest has begun. Wine and table grape harvests continue. -
Michigan grape scouting report – Sept. 16, 2020
Published on September 16, 2020
Harvest is starting for several hybrid and vinifera grapes in southwest Michigan. Northwest Michigan grape harvest will start soon. -
Michigan grape scouting report – Sept. 9, 2020
Published on September 9, 2020
Fourth generation egglaying of grape berry moth starts this week in southwest Michigan. Sour rot is being reported around the state. -
Michigan grape scouting report – Sept. 2, 2020
Published on September 2, 2020
With harvest approaching, keep clusters protected from insects and rots. Watch your preharvest intervals. -
Michigan grape scouting report – Aug. 26, 2020
Published on August 26, 2020
The warm, sunny weather has allowed sugar to accumulate in fruit. In southern Michigan, harvest of some early hybrid varieties will begin in the next one to two weeks. -
Michigan grape scouting report – Aug. 19, 2020
Published on August 19, 2020
Most grapes have completed or are starting veraison. Grape berry moth and downy mildew incidents are increasing. -
Michigan Grape scouting report – August 12, 2020
Published on August 12, 2020
Pest pressure is increasing, and some growers are clearing up from the derecho. -
Michigan grape scouting report – Aug. 5, 2020
Published on August 5, 2020
Egglaying from third generation grape berry moth is starting this week in southern vineyards. -
Michigan grape scouting report – July 29, 2020
Published on July 29, 2020
Early varieties are beginning veraison in southern vineyards and downy mildew is visible in unprotected fields. Egglaying by third generation grape berry moth is expected to start next week in southwest Michigan. -
Michigan grape scouting report – July 22, 2020
Published on July 22, 2020
Summer meeting season is here. Look here for a list of upcoming grape educational events. -
Michigan grape scouting report – July 15, 2020
Published on July 15, 2020
Bloom has ended in northern Michigan. Diseases and berry moth larvae have been found on clusters in southern Michigan. -
Michigan grape scouting report – July 8, 2020
Published on July 8, 2020
Vinifera grape bloom is continuing in northern Michigan. Egglaying by the next generation of grape berry moth is expected to start soon in southwest Michigan. -
Michigan grape scouting report – July 1, 2020
Published on July 1, 2020
Vinifera grape bloom is continuing in northern Michigan. Egglaying by the next generation of grape berry moth is expected to start soon in southwest Michigan. -
Michigan grape scouting report – June 24, 2020
Published on June 24, 2020
Grape bloom has started in northern Michigan. Summer insect and disease management programs are starting in southern Michigan. -
Michigan grape scouting report – June 17, 2020
Published on June 17, 2020
Vinifera grape bloom has started in southern Michigan. Disease control is still critical and berry moth catches are peaking. -
Michigan grape scouting report – June 10, 2020
Published on June 10, 2020
Hybrid and juice grape bloom has started in southern Michigan. The warm weather has increased the number of phomopsis reports around the state. -
Michigan grape scouting report – June 3, 2020
Published on June 3, 2020
The warm, wet weather means disease management is critical now. Prebloom webinar this Thursday, June 4. -
Michigan grape scouting report – May 27, 2020
Published on May 27, 2020
Vines are growing quickly. The warm, wet week means disease management is critical.
