Grape Pathology at Virginia Tech

Virginia Grape Disease Risks from Last Week, and Downy Mildew Forecast

Grape Disease Risk: 8/5-8/12/2026 and Downy Mildew Forecast Vine Status The majority of Chardonnay clusters are in the middle of veraison. For some reason, our Merlot dodged the frost, and its clusters started to acc

VA Grape Disease Risks and Downy Mildew Forecast

- Downy mildew risk forecast indicates high risk in Central VA

Grape Disease Risks: 7/29-8/5 and Downy Mildew Forecast Grape Disease Risks: 7/29 - 8/5/2026 NEWA is an Agricultural Weather Station Network, and we are part of the team. Here is a snapshot from last week sho

Weekly Grape Disease Updates, Seasonal Disease Management Reminders, and a List of short PHI materials.

Weekly Grape Disease Updates, Seasonal Disease Management Reminders, and a List of short PHI materials. Vine Status We received much-needed rain (~0.9 inches) yesterday! Many Chardonnay, Chardonel, and Vidal clusters are getting soft and approaching verais

Another update coming up. Until last night, all the forecasted rain did not happen in our neck of the woods, so the model overpredicted downy mildew. (It is still better than underpredicting the risk, though.) Some locations are still looking at many days with a high risk of downy mildew in the next 8 days.

https://ext.grapepathology.org/grape-disease-risks-7-15-22-2026-and-downy-mildew-forecast

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Virginia Grape Disease Risks from Last Week, and Downy Mildew Forecast
- It looks like we will have downy weather!

Grape Disease Risk: 7/8-7/15/2026 Vine status If anything, this year has been a Phomopsis year! These spots on the leaf in the picture are Phomopsis lesions. You do not need to manage this d

VA Grape Disease Risks from Last Week, and Downy Mildew Forecast

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VA Grape Disease Risks, Downy Mildew Forecast, and EPA Public Comments

Grape Disease Risks: 6/24-7/1/2026, Downy Mildew Forecast, and EPA Public Comment Vine status Still behind on canopy management, and vines are filling the canopy with many laterals. Hybrids and table grapes are a bit more consistent wi

VA Grape Disease Risks from Last Week, and Downy Mildew Forecast

Grape Disease Risks: 6/17-24/2026, and Downy Mildew Forecast Vine status We hedged our Chardonnay vines this week. Still behind on canopy management, as you can see in the picture above. Hybrids and table grapes ar

VA Grape Disease Risks from Last Week, and Downy Mildew Forecast

VA Grape Disease Risks:6/10-6/17/2026, and downy mildew forecast Vine status I found several third instars of spotted lanternfly (toward upper right, just below the catch wires) and ants enjoying their honeydew on a leaf.