Varroa Destructor: The Bee Pest Every British Beekeeper Fights

Varroa destructor is a tiny parasitic mite, roughly the size of a pinhead, that attaches itself to honey bees and feeds on their fat body tissue. Originally a parasite of the Asian honey bee, it jumped to the European honey bee (Apis mellifera) decades ago and has since become the single most damaging pest in beekeeping worldwide, including across the UK. Varroa weakens individual bees, spreads dangerous viruses through the colony, and if left unmanaged, can kill an entire hive within a year or two.

What Is Varroa Destructor and Why Does It Matter?

Varroa destructor is an external parasite that lives on both adult honey bees and developing brood. The female mite sneaks into a brood cell just before it's capped, lays eggs alongside the developing bee larva, and her offspring feed on the pupa as it grows. The bee that eventually emerges may be smaller, have shortened wings, or carry a reduced lifespan. Mites also transmit viruses such as deformed wing virus, which can spread rapidly through a colony once Varroa numbers climb.

This matters because the honey bee colony depends on every member working in harmony. A heavily parasitised hive struggles to forage, rear new brood, and survive winter. For British beekeepers, Varroa management is now a routine, year-round responsibility rather than an occasional concern.

How Does Varroa Destructor Affect Honey Bee Colonies?

Varroa populations build up gradually over a season, often unnoticed until numbers are already high. Signs of a serious infestation include:

• Bees with visibly deformed or shrivelled wings
• A patchy, irregular brood pattern
• Sudden, unexplained colony decline, especially heading into fade
• Finding mites themselves on adult bees or in brood cells when inspected

Because mites reproduce inside sealed brood cells, by the time a beekeeper spots a problem visually, the infestation is often well established. This is why regular monitoring, rather than waiting for obvious symptoms, is central to good hive management.

What Other Bee Pests Should Beekeepers Watch For?

Varroa destructor gets most of the attention, but it isn't the only bee pest British apiarists contend with. Others include:

• Asian hornet (Vespa velutina): an invasive predator that hunts honey bees at the hive entrance; sightings should be reported to the National Bee Unit.
• Wax moth: larvae that tunnel through comb, particularly in weak or neglected colonies.
• Small hive beetle: not yet widely established in the UK but closely monitored as a biosecurity risk.
• Nosema: a fungal gut parasite that causes dysentery-like symptoms in adult bees.

Responsible beekeepers treat pest management holistically, watching for all of these threats alongside Varroa, because a colony weakened by one problem is more vulnerable to the others.

How Do British Beekeepers Manage Varroa Mites?

There is no single cure for Varroa, so beekeepers rely on integrated pest management (IPM), a combination of approaches used together:

1. Monitoring: regular mite counts using methods like uncapping drone brood or using varroa floor inserts to track mite drop.
2. Biotechnical methods: techniques such as drone brood trapping (mites prefer drone cells, so removing this brood removes mites too) and requeening with mite-resistant stock.
3. Approved treatments: organic acids like oxalic and formic acid, or synthetic miticides, applied at specific times of year, particularly after honey is removed, to avoid any residue in the crop.
4. Colony husbandry: maintaining strong, well-ventilated hives and avoiding overcrowding, which helps bees cope better with mite pressure.

The British Beekeepers Association and the National Bee Unit's BeeBase service both offer detailed, season-by-season guidance that most UK beekeepers follow closely. It's painstaking work, repeated hive by hive, apiary by apiary, which is part of why genuinely well-kept British honey carries a quiet premium over mass-produced alternatives.

If you're curious about the people behind your jar, find raw honey from a beekeeper near you and ask them directly how they manage pests in their own hives. Most are only too happy to talk about it.

Does Varroa Destructor Affect the Honey We Eat?

Varroa itself poses no risk to humans and does not contaminate honey directly. The mite lives on bees and in brood cells, not in the honey stores themselves. However, a colony under heavy mite pressure may produce less honey overall, and a weakened or collapsed hive obviously can't produce any at all. In that sense, effective Varroa management underpins the availability and quality of the honey that eventually reaches your table.

This is one more reason to choose raw, unheated honey from small-scale, independent beekeepers rather than blended products of uncertain origin. When you buy from a known beekeeper, whether it's raw wildflower honey, heather honey, or blossom honey, you're supporting someone who inspects their hives regularly, treats responsibly, and takes pest management seriously because their livelihood and their bees' survival depend on it.

Why Choosing Local, Raw Honey Supports Healthier Bees

Every jar of genuinely local, raw honey represents hours of unseen hive management, much of it dedicated to keeping pests like Varroa in check. By choosing honey from identifiable British beekeepers rather than anonymous, heavily processed blends, you're helping sustain the kind of careful, small-scale beekeeping that gives colonies the best chance of thriving despite Varroa's relentless presence.

Raw wildflower honey, heather honey and blossom honey each carry the character of the region and season they came from, a character only possible when the bees behind them are healthy and well cared for. Ready to taste the difference? Discover raw honey from a trusted local beekeeper and support the hands-on work that keeps British hives buzzing.

Find raw honey from a beekeeper near you

Written with the help of AI for Local Honey, championing pure, raw honey from independent British beekeepers.

This article is for general information and is not medical advice.