Bud Hardiness

Bud Hardiness Update for Early April

Prepared by: 
Brad Estergaard
Date: 
April, 2018

Attached is the Winter Grape Bud Hardiness results for Early April.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on April 10th and 11th in the Okanagan Valley. 

This is the final Grape Bud Hardiness update for the 2017-18 winter season.  Returning in May are the Growing Degree Day (GDD) summaries.

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Location: 
Okanagan Valley

Winter Grape Hardiness for Late February

Prepared by: 
Brad Estergaard
Date: 
March, 2018

Attached is the Winter Grape Bud Hardiness results for late February.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on February 27th and 28th in the Okanagan Valley.

PDF viewer: 
Location: 
Okanagan Valley

Bud Hardiness Update for Mid March 2018

Prepared by: 
Brad Estergaard
Date: 
March, 2018

Attached is the Winter Grape Bud Hardiness results for mid March.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on March 13th and 14th in the Okanagan Valley.

PDF viewer: 
Location: 
Okanagan Valley

Bud Hardiness Update for Late March 2018

Prepared by: 
Brad Estergaard
Date: 
March, 2018

Attached is the Winter Grape Bud Hardiness results for late March.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on March 27th and 28th in the Okanagan Valley.

PDF viewer: 
Location: 
Okanagan Valley

Grape Hardiness Update for Mid February

Prepared by: 
Brad Estergaard
Date: 
February, 2018

Attached is the Winter Grape Bud Hardiness results for mid February.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on February 13th and 14th in the Okanagan Valley.

PDF viewer: 
Location: 
Okanagan Valley

Bud Hardiness Update for Late January

Prepared by: 
Brad Estergaard
Date: 
January, 2018

Attached is the Winter Grape Bud Hardiness results for late January.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on January 30th and 31st in the Okanagan Valley.

PDF viewer: 
Location: 
Okanagan Valley

Bud Hardiness Update for Mid January

Prepared by: 
Brad Estergaard
Date: 
January, 2018

Attached is the Winter Grape Bud Hardiness results for Mid January.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on January 16th and 18th in the Okanagan Valley.

Note: A power outage on Wednesday January 17th evening interrupted the freezer program causing a loss of the LTE tests.  The majority of Wednesday test sites were re-sampled and tested on Thursday, January 18th

PDF viewer: 
Location: 
Okanagan Valley

Bud Hardiness Update for Early December

Prepared by: 
Brad Estergaard
Date: 
December, 2017

Attached is the Winter Grape Bud Hardiness results for Early December.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on December 5th and 6th in the Okanagan Valley.

PDF viewer: 
Location: 
Okanagan Valley

Bud Hardiness Update for Late March 2017

Prepared by: 
Brad Estergaard
Date: 
April, 2017

Attached is the Winter Grape Bud Hardiness results for Late March.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on March 28th and 30th in the Okanagan Valley.

PDF viewer: 
Location: 
Okanagan Valley

Hardiness Update for Early April

Prepared by: 
Brad Estergaard
Date: 
April, 2017

Attached is the Winter Grape Bud Hardiness results for Early April.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on April 4th in the Okanagan Valley.

 

This is the final Bud Hardiness Report of the season.  The return of the Growing Degree Day Reports begins in May.

PDF viewer: 
Location: 
Okanagan Valley

Bud Hardiness Update for Late Feb/Early March 2017

Prepared by: 
Brad Estergaard
Date: 
March, 2017

The Winter Grape Bud Hardiness results for Late February / Early March.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on February 28th and March 2nd in the Okanagan Valley.

PDF viewer: 
Location: 
Okanagan Valley

Bud Hardiness Update for MId March 2017

Prepared by: 
Brad Estergaard
Date: 
March, 2017

Attached is the Winter Grape Bud Hardiness results for Mid March.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on March 14th and 16th in the Okanagan Valley.

PDF viewer: 
Location: 
Okanagan Valley

Hardiness Update for Mid February

Prepared by: 
Brad Estergaard
Date: 
February, 2017

Attached is the Winter Grape Bud Hardiness results for Mid February.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on February 11th and 14th in the Okanagan Valley.

PDF viewer: 
Location: 
Summerland Research & Development Centre

Bud Hardiness Update for Early January

Prepared by: 
Pat Bowen
Date: 
January, 2017

The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on Jan 3 in the Okanagan Valley.

PDF viewer: 
Location: 
Summerland Research & Development Centre

Hardiness Update for Late January

Prepared by: 
Brad Estergaard
Date: 
January, 2017

Attached is the Winter Grape Bud Hardiness results for Late January.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on January 31st in the Okanagan Valley.

PDF viewer: 
Location: 
Okanagan Valley

Hardiness Update Late November

Prepared by: 
Brad Estergaard
Date: 
November, 2016

Attached is the Winter Grape Bud Hardiness results for late November.  The hardiness levels were determined as average lethal temperature exotherms (LTE)measured on buds of several varieties by region collected on November 17th and 23rd in the Okanagan Valley.

PDF viewer: 
Location: 
Okanagan Valley

Bud Hardiness Reports for March 2016

Prepared by: 
Dr. Pat Bowen
Date: 
March, 2016

The Bud Hardiness reports for March. The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region, collected on March 29-31 in the Okanagan Valley.

PDF viewer: 
Location: 
Okanagan Valley

Bud Hardiness Report - January 5, 2016

Prepared by: 
d
Date: 
January, 2016

Attached is the bud hardiness update for early January.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region, collected on Jan 5 in the Okanagan Valley.

Location: 
Summerland Research and Development Centre (SRDC)

Bud Hardiness Report - Mid-January 2016

Prepared by: 
Dr. Pat Bowen
Date: 
January, 2016

Attached is the bud hardiness update for mid-January.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region, collected on Jan 14 and 19 in the Okanagan Valley.

Location: 
Summerland Research and Development Centre (SRDC)

Bud Hardiness Report - December 17, 2015

Prepared by: 
Dr. Pat Bowen
Date: 
December, 2015

Attached is the bud hardiness update for late December.  The hardiness levels were determined as average lethal temperature exotherms (LTE) measured on buds of several varieties by region, collected on Dec 17 and 22 in the Okanagan Valley.

Cheers and best wishes for 2016!

Location: 
Summerland Research and Development Centre (SRDC)

Bud Hardiness Report - December 3, 2015

Prepared by: 
Dr. Pat Bowen
Date: 
December, 2015

Attached is the bud hardiness report for early December.  The hardiness levels were determined as lethal temperature exotherms (LTE) measured on buds of several varieties by region, collected on Dec 3 and 8 in the Okanagan Valley.

Location: 
Summerland Research and Development Centre (SRDC)

Bud Hardiness March 3 - 5, 2015

Prepared by: 
Dr. Pat Bowen
Date: 
March, 2015

Attached are bud hardiness levels determined as lethal temperature exotherms (LTE) measured on buds of several varieties by region, collected on Mar 3-5 in the Okanagan Valley.

Location: 
PARC

Bud Hardiness - Apr 11

Prepared by: 
Dr. Pat Bowen
Date: 
April, 2014

Attached is the complete set of grape bud hardiness measurements taken during fall to spring 2013-2014 (6990 buds were analyzed), with the final measurements taken on Apr 11.    

GDD updates for 2014 will commence in early May.

Winter bud hardiness

Prepared by: 
Dr. Pat Bowen
Date: 
November, 2013

Attached are hardiness levels determined as lethal temperature exotherms (LTE) measured on buds of several varieties by region collected on Nov 8 in the Okanagan Valley.

Location: 
Pacific Agri-Food Research Centre, Summerland, BC

Hardiness - January 2013

Prepared by: 
Pat Bowen & Carl Bogdanoff
Date: 
January, 2013

As part of our research we have been measuring the hardiness of primary buds collected every two weeks from a number of commercial vineyards in the valley.  Attached, for your interest, are the average hardiness levels measured by location and variety since November. Each average hardiness level is from 15 buds (3 vines per site, 5 buds per vine). 

This report is not a guarantee that hardiness levels in any vineyard are the same or similar to those shown in the table.

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Location: 
Agriculture and Agri-Food Canada/Agriculture et Agroalimentaire Canada