The Role of Food Quality in Winter Survival
Is Honey a Good Winter Food?
Honey serves as a natural food source for bees, but its composition significantly impacts wintering success:
- High-glucose honey crystallizes quickly and becomes too hard for bees to consume.
- High-fructose honey remains soft and is easier for bees to digest.
Beekeepers should exercise caution with honeydew honey, collected from tree sap rather than flowers. This type can cause nosema disease, a common winter problem when bees remain confined for extended periods.
Using Sugar-Based Feeds in Winter
During autumn, bees produce invertase, an enzyme that breaks down complex sugars into glucose and fructose. Winter bees lack access to the protein necessary for producing this enzyme. Candy dough is unsuitable for winter feeding unless the sugar has already been inverted — pre-inverted sugar syrup is the preferable option.
What to Avoid
- Never provide liquid feed in winter, as it stimulates unwanted egg-laying.
- Do not heat supplemental food before feeding, as bees clustering around warm sources may abandon lower food stores, leading to starvation.
Common Wintering Problems and Their Solutions
Panic in the Hive
When strong colonies exhaust food in the hive's center and reach the back where less food is stored, bees become restless and stressed, resulting in rapid food consumption and dysentery. Monitor food supplies carefully and add extra stores before critical shortages occur.
Cluster Not Moving to the Upper Box
Sometimes the winter cluster remains in the lower box despite available food above. Remove two frames from the upper box, warm them indoors overnight, then replace them in the morning to encourage upward movement.
Colony Freezing
Some colonies fail to move upward and freeze in place. Take a few bees indoors to check for revival; if at least half show signs of life, move the colony to a warm space and lightly spray with sugar syrup. Before winter, combine weak colonies rather than leaving them to struggle — two weak colonies together have significantly better survival chances.
The Dangers of Moisture Build-Up
When bees digest carbohydrates and fats, metabolism produces water as a byproduct. Excessive hive insulation traps moisture inside, leading to digestive problems and encouraging nosema disease. Ensure proper ventilation and avoid over-insulating the hive.
Winter Cleansing Flights
- Test Flights (mid-February): Some bees take early flights, but snow may cause disorientation and death.
- Early Flights (late February): Helpful but limited; food reserves require continued monitoring.
- Mass Flights (March): Signals winter's end — check colony conditions and begin spring preparation.
Final Thoughts
Proper winter management prevents unnecessary colony losses and strengthens hives for spring: provide proper winter food, monitor moisture, keep food stores accessible, and watch for stress or starvation signs.