As an additional hardiness metric, also attached is a report on the survival times of Merlot grape buds held at -18C for an extended duration. Sampling for these tests took place on Dec 3rd and 10th from vines at SuRDC in Summerland.
Grape Hardiness Reports and Growing Degree Day updates can now be accessed online at:
https://drive.google.com/drive/folders/1Vrwoz7hB4camw4fQHmk7_7ZaEGwLgV1R
SuRDC Wine Grape Research newsletters can be accessed at:
https://drive.google.com/drive/folders/1NBg5f6qXfyfzM82ZeKgR-364foVJ7VJ8
Brad Estergaard
Viticulture Research Technician
Summerland Research and Development Centre (SuRDC)
Agriculture and Agri-Food Canada / Government of Canada