Georgia’s National Food Agency issued emergency guidance to the country’s beekeepers this week after prolonged rainfall and cold temperatures suppressed colony immunity across the country, triggering food shortages inside hives during the critical spring build-up period. Lab tests from the agency’s monitoring program found no infectious disease (American or European foulbrood did not appear in any collected sample), but the advisory made clear that weakened immunity leaves colonies exposed and that without intervention the coming weeks could do lasting damage to Georgia’s 14,000-strong beekeeping community and the spring honey harvest that depends on them.
A Warning Before Any Outbreak
The advisory’s most consequential finding cuts both ways. The agency confirmed that its systematic monitoring, with samples drawn from hives across the country and tested at agency laboratories, turned up no confirmed case of American foulbrood or European foulbrood, the two bacterial diseases most threatening to colony survival. Both spread readily through apiaries, moving from hive to hive on shared equipment, on drifting bees, and in stolen honey stores; in severe cases the only effective response is destroying and incinerating affected hives. Their absence from current monitoring samples is genuine relief for a sector built almost entirely on family operations.
But the agency also reported that the weather had created a stressful environment and weakened colony immunity. A hive carrying no active disease but running below-threshold immune capacity sits in a narrowing window. Spring foraging exposes colonies to a broad range of environmental pathogens, and a colony that would ordinarily fight off those exposures can fail when prolonged chilling and moisture have already taxed its defenses. The agency issued its alert before disease appeared in any collected sample, giving Georgian beekeepers weeks to act.
Food shortages compound the picture. When foraging stops, bees burn through stored honey just to maintain colony temperature and internal operations, and a nutrient-depleted colony is already more vulnerable to pathogens before any disease establishes itself. The advisory flagged that difficult spring weather “created food shortages that could negatively affect bee development,” which in practical terms means reduced brood survival, a smaller forager population, and a colony heading into the main summer collection window already behind on its population targets. Spring is the only period in which colonies build the workforce they will need for the rest of the year; losses now compound all season.
How Continuous Rain Shuts Down a Colony
Honeybees forage in a narrow environmental window: temperatures generally above 12 to 15 degrees Celsius, low wind, and no precipitation. Sustained rainfall closes that window entirely. Days without foraging mean days without pollen or nectar entering the hive, and for a spring colony building its population, that deficit accumulates fast. Brood requires a constant protein supply from pollen; nectar provides the carbohydrates that power the adult bees maintaining temperature and nursing the young.
Humidity creates a second front inside the hive. Bees must evaporate nectar from roughly 80 percent water content down to a stable 17 to 18 percent before it can be capped as honey. High ambient humidity slows that process and raises the risk of fermentation in stored supplies. Inside a poorly ventilated hive, excess moisture promotes fungal conditions that favour chalkbrood and nosema infections, and warm dampness accelerates mite reproduction inside sealed brood cells.
- Foraging shutdown: rain-grounded colonies lose all pollen and nectar intake; brood protein deficits begin accumulating within days of sustained rainfall.
- Stores consumption: a colony of 50,000 bees can burn several pounds of stored honey within a few days when confined to the hive, simply maintaining internal temperature.
- Humidity and pathogen risk: high relative humidity promotes chalkbrood and nosema infections and accelerates mite reproduction inside sealed brood cells.
- Nectar quality loss: prolonged rain washes nectar from flowers or dilutes it; brief foraging breaks between showers yield lower-quality forage than normal spring conditions.
- Queen laying pressure: a colony under food stress may cut the queen’s laying rate, reducing the next generation of foragers before they emerge.
Taken together, those five dynamics can leave a colony at late spring with a fraction of the population it needs to work the main nectar flows effectively.
A Sector That Runs on Family Hives
The Georgian Beekeepers Union counts approximately 14,000 active beekeepers across the country, with agricultural enterprises accounting for just 6 percent of total honey production. The remaining 94 percent comes from family household operations, a structure that reflects centuries of tradition but leaves individual beekeepers without the capital buffers that larger commercial operations use to absorb a difficult season.
Production geography is concentrated in Imereti, Kakheti, Samegrelo-Zemo Svaneti, and Adjara, the four regions that led output through the period from 2016 to 2021. The Caucasian grey mountain honeybee, a native subspecies valued for its productivity across variable weather conditions, sits at the center of that output; Georgia’s biodiversity of flora across multiple distinct climate zones gives its honey a botanical range that supports both mono-floral and poly-floral varieties with stable export demand. Georgia is also home to the oldest honey specimen ever discovered.
| Export Market | Share of Georgian Honey Exports (2022) |
|---|---|
| United States | 36% |
| Germany | 14% |
| Japan | 8% |
| United Kingdom | 6% |
Annual production averaged roughly 2,400 tonnes between 2016 and 2020, growing at about 4 percent per year, according to a sector-level honey production analysis by Georgia Today. The global honey market was valued at roughly $8.5 billion in 2022 and is projected to reach about $12.7 billion by 2029, providing a favorable long-term demand environment for Georgian producers. But in 2021, mite spread drove a 16.7 percent single-year production decline; exports to EU countries increased despite that drop, but the output shock showed how quickly a pest or weather event can unwind years of careful expansion.
Varroa Mites and the Humidity Window
Varroa destructor, the mite species most commonly responsible for honey bee colony losses globally, thrives in the warm, humid conditions that prolonged spring rain creates inside poorly managed hives. Mite populations don’t grow linearly: they compound inside sealed brood cells, cycling through generations faster when ambient conditions favour them. A colony already stressed by food shortage and suppressed immunity is a weaker host, less equipped to limit rising mite pressure during a wet spring. A scoping review of Varroa’s impact on global honey bee populations, published in Science of the Total Environment, found that mite infestations weaken colonies and make them more susceptible to additional environmental stressors, a finding that describes precisely the compounding risk Georgian colonies face this season.
The biological mechanism is specific. Varroa mites feed on bees’ haemolymph, the fluid equivalent of blood in insect physiology, during both brood development and adult life stages. Australia’s national Bee Aware program for bee disease surveillance reports that Varroa feeding reduces the effectiveness of the bee’s immune system, making infected colonies more susceptible to secondary viruses and co-occurring parasites. As mite populations grow and the colony’s workforce shrinks, those two effects accelerate together faster than beekeepers can address without early intervention.
Georgia’s beekeeping sector encountered a mite-driven version of this cascade in 2021, when colony losses cut annual output sharply. The agency’s warning this week finds conditions that echo the same sequence: weather-suppressed immunity, with Varroa pressure ready to build in warm, humid hives. The advisory’s specific instruction to replace older queens addresses this directly; younger queens produce brood in faster cycles, which compresses the window in which mites can reproduce inside capped cells between treatment applications. Given that the same combination of weather stress and mite pressure drove a sharp output decline before, the agency’s decision to act before confirmed disease reflects the right intervention window.
The Recovery Protocol
Georgia’s National Food Agency divided its guidance into physical intervention and biological support. On the hive environment side, the recommendations cover immediate stabilization:
- Improve ventilation and thermal insulation in all hives, with particular attention to weaker colonies where temperature fluctuations are hardest to control.
- Dry out hive equipment and apply thermal treatment to woodwork where moisture penetration is advanced; wet timber holds humidity against the comb even after external rain stops.
- Relocate apiaries from shaded, humid sites where ground moisture concentrates and solar drying cannot reach the hive floor.
- Raise hives to 25 to 50 centimeters above ground level to reduce cold air drainage and moisture uptake through the floor boards.
- Remove unnecessary empty frames from weak colonies; a smaller interior volume is easier for the remaining bees to heat and defend.
- Replace older queen bees with younger, more productive queens to accelerate brood production and tighten the reproductive cycle that limits mite spread.
On the colony health and nutrition side:
- Provide supplemental protein feed (pollen substitutes) and carbohydrate feed to compensate for the foraging gap; protein is the more urgent priority because it drives brood development directly.
- Apply approved biological products including probiotics to strengthen immune response while colonies rebuild.
- Monitor food supplies and water quality closely and carry out mite treatment without delay.
- Report any signs of disease or infestation to the agency’s monitoring program immediately.
The requirement for systematic monitoring and prompt reporting also sets the conditions for what follows. If disease does appear in samples despite current precautions, the response escalates from advisory to mandatory intervention. No such escalation has been triggered. The clean monitoring results mean the program detected colony stress before disease set in, which is exactly when intervention is most effective.
Spring honey production builds toward its summer peak across Georgia’s major producing regions, and the agency’s advisory lands early enough in the season to leave beekeepers a working window for recovery.
