WINTER FREEZE DAMAGE AND SPRING FROST RATINGS
FOR GRAPES AT VINELAND STATION, ONTARIO
K.H. Fisher, HRIO/University of Guelph, Vineland
| Winter Freeze Damage | Spring Frost | |
| Variety | (rating 1-10*) | (rating 1-5**) |
| Aurore | 8 | 3 |
| Auxerrois | 3 | 3 |
| Baco Noir | 8 | 1 |
| Cabernet Franc | 5 | 5 |
| Cabernet Sauvignon | 3 | 5 |
| Cayuga White | 8 | 2 |
| Chambourcin | 7 | 5 |
| Chardonnay | 5 | 3 |
| Concord | 10 | 2 |
| De Chaunac | 9 | 3 |
| Elvira | 10 | 2 |
| Fredonia | 10 | 2 |
| Gamay Noir | 5 | 5 |
| Gewurztraminer | 3 | 5 |
| Geisenheim 318 | 8 | 5 |
| Leon Millot | 10 | 1 |
| Limberger | 3 | 5 |
| Marechal Foch | 10 | 1 |
| Merlot | 2 | 4 |
| Nebbiolo | 1 | ? |
| Niagara | 8 | 2 |
| Petite Sirah | 1 | ? |
| Pinot Blanc | 3 | 5 |
| Pinot Gris | 3 | 5 |
| Pinot Noir | 3 | 5 |
| Riesling | 5 | 5 |
| Sauvignon Blanc | 1 | 5 |
| Seyval Blanc | 8 | 4 |
| Sovereign Coronation | 9 | 3 |
| Vidal | 8 | 5 |
| Zinfandel | 1 | ? |
* – ranked 1-10 1 is the most susceptible and 10 is the most tolerant.
** – ranked 1-5. 1 is the most susceptible and 5 is the most tolerant.
The ratings are based on best management practices with growers and research experience and are subject to fluctuations.