On 2/19/2016, buds were chopped for winter survival measurements on 7 sentinel varieties at the University of Minnesota research vineyards at the Horticultural Research Center. The data represented here are just an example using a small sample number of canes, buds, and cultivars. Only 4 canes, 8 buds each were evaluated (32 total buds). We urge you to begin sampling your own vineyards as there is some evidence of damage. At this point, no changes would be needed to pruning based on these results at this location. More complete data will be presented in coming weeks.
Cultivar Primary Bud Survival
Brianna 94%
Frontenac 84%
Frontenac gris 97%
Frontenac blanc 84%
La Crescent 91%
Marquette 88%
St. Croix 91%