Necessary knowledge: Most serious bee-health risks do not arrive dramatically. They arrive as a bargain colony, a borrowed extractor, an old box of comb or a queen sent through the post. Biosecurity means reducing the chance that bees, mites, spores or beetles travel with them.
Different purchases carry different risks
| Purchase | Relative concern | Main questions |
|---|---|---|
| Locally produced queen in a new cage | Lower, not zero | Origin, attendants, current restrictions |
| Established colony | Higher | Brood health, varroa history, movement permission |
| Nucleus with brood | Higher | Brood disease, mites, comb origin |
| Clean empty boxes | Moderate | Previous apiary, cleaning and storage |
| Used brood comb | Very high | Unknown spores, residues and pests |
| Honey intended as bee feed | Very high | Origin and risk of foulbrood spores |
“Relative concern” is not a legal classification. Local disease status and regulation can move an item into a much higher category.
Before buying live bees
- Identify the seller and the physical origin of the bees.
- Check official restriction zones at both origin and destination.
- Ask when and how varroa was last measured—not only when it was treated.
- Ask about unusual brood signs and previous foulbrood findings.
- Confirm the queen’s origin, year and marking.
- Clarify whether a movement permit, inspection or health certificate is required.
- Keep a written record of the transaction and colony identity.
Inspect before combining
Whenever practical and lawful, keep newly acquired colonies identifiable and avoid immediately exchanging brood combs with established colonies. Use separate notes and clean tools between groups. Isolation is useful only when it is paired with inspection, monitoring and a plan for what happens if something suspicious appears.
Used comb is not merely second-hand furniture
Comb can carry persistent biological material, chemical residues and pests. American foulbrood is particularly important because its causative bacterium forms durable spores. Visually clean comb is not proof of safety. Buying unknown brood comb to save the cost of wax and foundation can create a disproportionate risk.
Shared extractors and tools
- Agree on cleaning responsibilities before equipment changes hands.
- Keep brood frames out of honey-processing equipment.
- Prevent bees from accessing wet supers, honey residues and stored comb.
- Do not move equipment out of a restricted apiary unless authorised.
- Record which apiaries shared equipment if tracing might later be needed.
Queens and international trade
Rules are stricter across borders. For entry into the EU from third countries, the European Commission describes controlled consignments that generally permit one queen with no more than 20 attendants in an individual cage. Accompanying cages, attendants and material are subject to official handling and examination for exotic pests. Ordering online does not make a shipment lawful.
If you decide to accept additional risk
Risk cannot be made harmless with a disclaimer. Reduce it deliberately: document the source, avoid used brood comb, inspect brood, measure varroa, keep colonies identifiable, avoid immediate redistribution, clean tools and know whom to call before the bees arrive.
Stop and seek help when
- brood signs are compatible with foulbrood;
- the seller cannot explain the origin of imported bees;
- movement restrictions apply;
- you find an unfamiliar beetle, mite or hornet;
- several colonies decline after a purchase;
- you are asked to conceal or mislabel the contents of a shipment.
Sources
- European Commission: movements and entry rules
- Swedish Board of Agriculture: movement, inspection and disease information
- World Organisation for Animal Health: bee diseases
Reviewed 16 October 2026. This is a general biosecurity framework, not a substitute for current import, movement or disease-control rules in your jurisdiction.