A Practical Comparison of Cold Storage and Traditional Outdoor Hive Wintering Methods in Central West Virginia

Progress report for FNE21-982

Project Type: Farmer
Funds awarded in 2021: $7,317.00
Projected End Date: 06/30/2023
Grant Recipient: Sugar Bottom Farm LLC
Region: Northeast
State: West Virginia
Project Leader:
Eric Grandon
Sugar Bottom Farm LLC
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Project Information

Project Objectives:
  1. This project seeks to answer the question, " Will West Virginia winter losses decrease by placing honeybees in cold storage?"
  2. This project seeks to answer the question, " Will honeybees emerge stronger and healthier than outside bees when overwintered in cold storage?"
  3. This project seeks to answer the question,  " Will the cost of colonies saved offset the costs of materials for cold storage?"
  4. This project seeks to answer the question, " Will there be a reduction in spring mite treatment cost?"
  5. This project seeks to answer the question, " Will this method be beneficial for all sizes of beekeepers?

I feel the honeybee is the most important part of agriculture today.  Given a third of every bite you take is pollinated by the honeybee alone.  Without this pollinator, we could lose 118 fruits, nuts and vegetables.  Science Times reports that with the loss of he honeybee, we would have no more than 4 years left on earth.  

In the last several years, the average honeybee loss have been at least 40% of all registered hives in the United States.   West Virginia has not been too far off that mark, but is higher than the national average.  These numbers have a huge impact for the farmers.  First, the loss of his bees is costing the farmer for replacement bees along with the loss of their honey crop.  Secondly, because of poor harvests due to the lack of pollination carried out by the honeybee.  Losses have been linked to many things.  The Varroa Destructor, pesticides, loss of forage, monoculture, humans and weather are all blamed.  I believe our winter weather has more to do with our winter losses due to the extreme temperature shifts when the bees should be in cluster.  

In late summer / early fall, the queen begins to lay the winter bees which can live 4 to 6 months allowing those bees to carry the colony through winter into spring when the new brood will start being produced.  By regulating temperature to a constant 38-40 degrees F., bees will consume less honey, age more slowly, and clusters will experience fewer winter weather related losses than those bees kept outside in West Virginia's extreme temperature fluctuations.  

I believe that placing winter colonies into cold storage here in WV will decrease winter losses and will also be stronger and healthier hives.  I plan on using a normal insulated room and window air conditioner tied with th Coolbot system.  It will place the honey bee colonies into a light cluster allowing the bees to be able too eat but at the same time rendering them unable to fly.  



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  • Michael Shamblin - Technical Advisor


Materials and methods:

Upon arrival of honeybee packages, 35 packages will be numbered 1-35 and placed randomly in one of my three bee yards on my farm.  Before installation, woodenware is scraped clean and disinfected in a 50% bleach solution and allowed to dry to reduce the incidence of disease.  After installation, initial feeding will begin and the first inspection will begin on day 3 and 4, weather dependent.  Each numbered hive will have a corresponding inspection checklist and all inspection log sheets will be displayed in the master  inspection log book.  Inspection checklists will not only pertain to the honeybee inspection, but will also provide weather data.  At this point, no colony will be labeled with whether it will remain outside or be placed into the cold storage room for the winter months.  The decision to choose will take place at the end of November, weather dependent.  The numbers 1-35 will be placed on separate small pieces of paper and the control group will be the first 15 numbers drawn.  Someone without ties to the study will draw the 15 numbers.  The individual will be chosen at a later date.  The 15 randomly chosen colonies will be placed in the cold storage room on December 1 and will remain in cold storage until March 1.  During the spring summer and fall, each of the 35 numbered colonies will receive the same management techniques and interventions.  In the case of a mid season loss through Colony Collapse Disorder or absconding, the colony will be replaced with one of the 5 additional replacements.  

After hives are placed in cold storage, I will be recording daily temperature highs and lows, humidity and will record whether bees are flying.  Bees in cold storage will remain at or near a constant 38-40 degrees F. and humidity levels will be checked daily.  Mortality in both storage areas will be checked weekly with a spot thermal camera allowing us to make inferences to weather related losses.  In case of power outage, a generator will maintain climate in the cold storage unit.  On March 1, hives will be brought from cold storage and vitality will be checked in both groups with the spot thermal camera.  As warm weather permits, comparisons will be recorded between the two sets of colonies.  Information will then be used build a case for or against the practice as financially sound.  

Participation Summary

Learning Outcomes

2 Farmers reported changes in knowledge, attitudes, skills and/or awareness as a result of their participation
Key areas in which farmers reported changes in knowledge, attitude, skills and/or awareness:

During the course of our project we experienced several unexpected factors and gained knowledge along the way.  Several of the colonies had pesticide exposure on adjacent property which caused eventual death to the colony.  Other colonies were weakened and did not die immediately but during the cold temperatures in October/November they did not survive to make it to the time for cold storage observation.  Due to the death of the colonies and the weakness of the remaining colonies we did not proceed with the cold storage project because the data would have been comprised at that point.  Now that we are aware of the issues we have talked to the West Virginia Department of Agriculture, Department of Highways, Utility companies as well as Columbia Gas pipeline company about the use of sprays that can affect our colonies.  I will be contacting the Department of Environmental Protection to address the use of sprays which harms the entire environment plus collateral damage which I suffered. 

Project Outcomes

1 Farmers changed or adopted a practice
$0.00 Dollar amount of grants received that built upon this project
Project outcomes:

As I look back I witnessed first hand the destruction of chemical inputs into our ecosystem as a whole. If there had been prior warning I could have at least blocked the entrances to my hives. I feel that our Department of Agriculture and the others mentioned above should have to notify one another if spraying is to occur and if any registered colonies are within the area. As a whole the damage I suffered could cost me about $50,000 in lost harvest and revenue this upcoming season. 

The impact of this project is the fact that chemical spraying is having a negative effect in our agriculture communities.  Not only does it destroy the areas that have been sprayed but it effects the water the soil and our livestock in surrounding areas.  It destroys our pollinators species, not only bees but other insects that can pollinate flowers, foods, trees and other agriculture products. This in turn can affect life cycles of all living things and produce a cascade effect for the future.  Sustainability in and environment like this is next to impossible. 

Assessment of Project Approach and Areas of Further Study:

There were several challenges during this project and many out of our control.  Due to Covid 19 we were unable to buy the bulk sugar that we needed to feed the bees during the dearth which is necessary for any starting colony.  There was also very minimal honey flow during the fall due to summer weather.  I traveled to a neighboring state to purchase emergency bee feed to help the colonies survive through the winter however this measure was unsuccessful due to the issues with pesticide exposure.  Also due to price of lumber and supply chain issues we were delayed in our cold storage unit completion until midwinter.  A secondary plans had been developed for meeting the requirements of cold storage however the bees did not survive until that point. I also had health issues which limited my ability during the course of the study. We also realized during this study that the decision to put the bees in cold storage should be based on weather versus calendar date.  Given the fact that we were unable to accomplish the study there would be little or no impact to other farmers learning from this study.  Due to this we are requesting an extension until June of 2023 to complete the study.

Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture or SARE.