Grape Disease Risks from Last Week, and downy mildew forecast

Vine status It has not changed much from last week. Temperatures have been relatively low, and the shoot growth rate remains slow. However, I observed some improvements (e.g., growth from… Read more

Grape Disease Risks from the last week, Mancozeb and Isomate Z Updates.

Vine status I was hoping to see some progress by now, but since the temperature has been relatively low (or maybe normal for this time of the year), vines have… Read more

Frost, disease risks, and a downy forecast

Vine status Unfortunately, many of our vines were affected by the frost event yesterday. I have heard from Northern VA, the Shenandoah Valley, and Central VA, with varying degrees of… Read more

VA Grape Disease Risks: 4/8 – 4/15/26 and downy mildew forecast

Vine status Our Chardonnay vines have grown quickly and are now about ~2 inches in shoot length. We lost about 10-15% due to the frost event that happened on 4/8/2026.… Read more

Grape Disease Risks: 9/24-10/1/2025, an 8-day downy mildew forecast, and slides from the previous meeting – last weekly update for the season.

Grape disease risks from the NEWA Here is a snapshot from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW =… Read more

Grape disease risks: 8/27-9/3/2025, an 8-day downy mildew risks, and upcoming AHS AREC Events

Grape disease risks from the NEWA Here is a snapshot from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW =… Read more

Grape Disease Risks: 8/20-8/27, and an 8-day downy mildew forecast

Grape disease risks from the NEWA Here is a snapshot from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW =… Read more

Grape Disease Risks: 8/7 – 8/13/2025 and an 8-day downy mildew forecast

Grape disease risks from the NEWA Here are snapshots from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW = Powdery… Read more

Grape Disease Risks: 7/30-8/6/2025, an 8-day downy mildew forecast, and slides from today’s meeting

Grape disease risks from the NEWA Here are snapshots from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW = Powdery… Read more

Grape Disease Risks: 7/23 – 7/30/2025 and an 8-day downy mildew forecast

Grape disease risks from the NEWA Here are snapshots from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW = Powdery… Read more
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