Here are snapshots from the last week, showing the number of days with the risk of each disease: Ph = Phomopsis, PW = Powdery mildew, BR = Black rot, and DM = Downy mildew. N/A means there is no data or some issues with the NEWA (which has been reported). The letter in parentheses indicates L = Low risk, M = Moderate risk, and H = High risk of downy mildew based on our model, which includes the next 48 hours forecasted weather.

Since the model results were from yesterday, downy mildew risk was not high in many locations; however, when we included forecasted information, the second model indicated many high infection risks throughout the Commonwealth. Please keep an eye on the forecasted weather. The last three days of rain favor downy mildew development.

For the detailed recommendations, please check our pest management guides, the previous post about at bloom protection, and the slides from our last meeting.