How to Breed Better Bees

Breeding better bees is deliberate, seasonal work. It means choosing clear traits, selecting the best colonies and drone sources, using reliable queen-rearing and mating methods, keeping disciplined records, and removing poor lines from the breeding pool.

In UK conditions, progress is usually gradual rather than dramatic. Weather, forage, varroa pressure, neighbouring drones and disease history all affect results. With consistent selection over two to three seasons, however, you can make colony performance more predictable and better suited to your own apiary.

Decide what “better” means for your apiary

Start with three or four traits that genuinely matter to your beekeeping. If you try to select for everything at once, your decisions become vague and progress slows.

Common UK breeding priorities include:

• Overwintering survival and steady spring build-up
• Low varroa levels or reduced mite growth under normal management
• Hygienic behaviour, including rapid removal of dead or diseased brood
• Calm temperament and ease of handling
• Good brood pattern and reliable queen performance
• Honey production in your local forage conditions
• Reduced disease problems, especially brood disease
• Low swarming tendency, where this can be assessed fairly

The right priorities depend on your purpose. A honey producer may place more weight on yield and manageability. A beekeeper in an area with repeated brood disease concerns may give disease resistance and hygienic behaviour a higher weighting. For urban or garden apiaries, temperament is not optional: difficult colonies should not be bred from, even if they produce honey.

Genetic basics every bee breeder should understand

Honey bee breeding is not the same as breeding livestock with a single sire and dam. A queen mates with multiple drones, usually in drone congregation areas away from the hive. Colony performance is therefore shaped by the queen and a mixture of drone fathers.

Keep these points in mind:

• Good queens need good drones. Selecting breeder queens but ignoring drone production gives only partial control.
• Colonies are the unit you assess. You are judging the behaviour and performance of thousands of related workers, not just the queen herself.
• Local adaptation matters. Bees that thrive in one part of the UK may not suit another area with different weather, forage and disease pressure.
• Avoid narrow selection. Breeding only for honey yield, for example, can lead to poor temperament, weak wintering or disease vulnerability.
• Maintain genetic diversity. Repeatedly breeding from one outstanding colony can increase inbreeding risk and reduce resilience.

Small-scale beekeepers can still make progress, but it is easier when working with neighbouring beekeepers, a local breeding group, BIBBA group or association mating apiary.

What to measure and when

Selection only works if your scores are consistent. Use the same scale, the same definitions and, where possible, the same person assessing the colonies. Weather, nectar flow, colony size and recent disturbance all affect behaviour, so record the context as well as the score.

Practical scoring tips

Use a simple 1–5 scale for subjective traits such as temperament, brood pattern and ease of handling. Define the scale before the season begins. For example:

• 1 = unacceptable
• 2 = poor
• 3 = average
• 4 = good
• 5 = excellent

Do not breed from colonies that are aggressive, repeatedly queenless, heavily diseased, poor at wintering or consistently difficult to manage.

For hygienic behaviour, a pin-kill test is a practical starting point. Freeze-killed brood testing can be more accurate but needs suitable equipment and safe handling. Colonies removing more than 90% of killed brood within 24–48 hours are strong candidates, provided they also perform well in other traits.

For varroa, one count is rarely enough. Trends matter. Record the method, date, colony strength, recent treatments and result. A colony with low mites because it has recently been treated is not the same as a colony that consistently shows slow mite growth before treatment.

Choosing breeder colonies

Work from your best proven colonies, not from queens that merely look promising for a few weeks. A breeder colony should perform well across the whole season and ideally through winter.

A practical selection process:

1. Review last season’s records and remove any colony with serious faults from consideration.
2. Score all eligible colonies using your chosen traits.
3. Shortlist the top 10–20%.
4. Re-check the shortlist in spring before using them as grafting or larval sources.
5. Select several breeder colonies rather than relying on one queen.

For most small and medium apiaries, using three to six good breeder mothers is safer than using a single “best” colony. It protects genetic diversity and reduces the risk of multiplying a hidden weakness.

Choosing drone-producing colonies

Drones contribute half the genetics of every daughter queen’s offspring, yet drone management is often neglected. If you want better mating results, plan drone production before you start queen rearing.

Select drone colonies that are:

• Healthy and strong
• Calm and manageable
• From lines with good wintering and brood pattern
• Showing acceptable varroa levels under your management
• Free from brood disease concerns
• Productive enough to support drone rearing without collapsing

Avoid allowing poor colonies to produce large numbers of drones. In practice, this means replacing drone comb in undesirable colonies and encouraging drone production only in selected colonies.

Drones take about 24 days to develop from egg to emergence and need further time to become sexually mature. Start preparing drone colonies around six weeks before you expect virgin queens to mate. In many UK areas, this means introducing drone foundation or preserving good drone comb from March or April, depending on the season.

Queen-rearing methods for UK apiaries

Choose a method that suits your scale, confidence and weather. There is no single best system. A reliable simple method is better than a complicated system run badly.

Simple queen rearing for small numbers

Suitable methods include Miller, Hopkins-style methods, cut-cell methods, or using selected larvae in well-prepared queenless nucleus colonies.

Advantages:

• Low cost
• Minimal specialist equipment
• Good for beginners and small apiaries
• Less dependent on high grafting skill

Limitations:

• Less control over exact larval age
• Fewer queens produced
• More variation between cells

This approach is useful if you need a handful of replacement queens and want to start selecting from your own best colonies.

Grafting and cell builders

Grafting gives better control and is the standard method for producing larger numbers of queens.

You will need:

• Very young larvae, ideally less than 24 hours old
• Grafting tool and cell cups
• A strong cell builder with many young nurse bees
• Good feeding if there is no strong nectar flow
• A plan for mating nucs before cells are ready

Acceptance depends heavily on preparation. A weak or poorly fed cell builder gives poor queen cells, even if the grafting technique is neat. First attempts may have modest acceptance. With practice and good colony preparation, acceptance rates often improve, but always graft more larvae than the number of mated queens you need.

Mating nuc systems

Mating nucs allow you to mate virgin queens without using full colonies. They may be mini-nucs, two-frame nucs or five-frame nucs.

Good mating nucs need:

• Enough young bees to care for the queen
• Adequate food
• Ventilation and protection from overheating
• Clear identification
• Regular checking without excessive disturbance

Check for a laying queen once she has had time to mate, usually around two to three weeks after emergence depending on weather. Do not rush to reject a queen after a short spell of poor flying weather.

Instrumental insemination

Instrumental insemination gives the greatest control over parentage, but it requires specialist equipment, training and practice. It is most useful for research, conservation work, line development or maintaining specific breeding material.

For most beekeepers, collaboration with an experienced operator or breeding programme is more practical than buying equipment immediately.

Mating control in the UK

Mating is the hardest part of bee breeding because virgin queens may mate away from the apiary with drones from unknown colonies. In much of the UK, complete control is difficult without instrumental insemination or a genuinely isolated mating site.

Options, from least to most controlled, include:

1. Open mating in your local area

This is the simplest option. It can work well if the surrounding drone population is good, especially where local beekeepers share similar breeding aims.

The downside is uncertainty. Poor neighbouring drones can dilute progress, and you may not know which lines have contributed.

2. Drone flooding

Drone flooding means producing large numbers of drones from selected colonies near your mating area. It does not guarantee parentage, but it improves the odds.

To do it well:

• Prepare drone colonies early
• Use several selected drone lines
• Keep drone colonies strong and healthy
• Place them near the mating yard before virgin queens are ready
• Avoid raising queens before mature drones are available

3. Isolated or semi-isolated mating yards

An isolated mating yard reduces unwanted drone influence. True isolation is hard to achieve in the UK because drones and queens can fly several kilometres and many areas have unknown apiaries.

A site 3 km from other known apiaries may help, but greater distance and natural barriers are better. Islands, remote valleys and organised association mating sites offer stronger control.

4. Instrumental insemination

This is the best option for strict pedigree control. It is valuable where you are trying to conserve a line, test specific crosses or develop stable breeding material. It is not necessary for every beekeeper who wants calmer, healthier, more locally suited bees.

A practical UK breeding calendar

Exact timing varies by region and season. Do not rear queens to a fixed date if colonies are weak, drones are absent or the weather is unsuitable.

January to February

• Review last season’s records.
• Identify colonies that overwintered well so far.
• Plan breeding aims and equipment needs.
• Order or prepare grafting kit, nucs, frames and queen-marking supplies.
• Avoid unnecessary disturbance during cold weather.

March to April

• Confirm which colonies are strong, healthy and queenright.
• Prepare drone-producing colonies with drone comb or drone foundation.
• Feed only where appropriate and avoid stimulating colonies beyond what they can safely support.
• Prepare cell builders as colonies expand.
• Carry out hygienic behaviour tests when colonies are strong enough.
• Begin queen rearing only when drones are developing and conditions are suitable.

May to June

• Main UK queen-rearing and mating period in many areas.
• Graft or start queen cells from selected breeder colonies.
• Keep cell builders strong and well supplied.
• Set up mating nucs before cells emerge.
• Maintain drone banks.
• Check mating nucs carefully once queens have had time to mate.

July to August

• Continue queen rearing if weather and drone availability remain suitable.
• Assess young queens for laying pattern and colony temperament.
• Record honey yields from production colonies.
• Requeen poor colonies before winter preparation if needed.
• Monitor varroa closely.

September to October

• Decide which queens and colonies are worth overwintering for possible breeding use.
• Remove poor queens from the breeding plan.
• Prepare colonies for winter with adequate stores and sound varroa management.
• Follow current UK product labels and guidance for any treatments used.

November to December

• Review results.
• Compare breeder mothers, daughter queens, mating sites and acceptance rates.
• Update lineage and performance records.
• Set the next season’s breeding priorities.

Managing drones without weakening colonies

Drones are essential, but they are costly for colonies to rear. Concentrate drone production in selected strong colonies rather than allowing every hive to raise drones freely.

Good practice includes:

• Using several drone-producing colonies, not just one
• Starting drone production early enough for mature drones to be present
• Keeping drone colonies well fed if forage is short
• Monitoring varroa carefully, as drone brood attracts mites
• Removing drone production from colonies you do not want contributing genetics

If you use drone brood removal as part of varroa control, avoid removing it from your selected drone banks during the mating period unless mite levels demand it.

Culling, requeening and maintaining lines

In breeding, “culling” usually means removing a queen or line from the breeding programme, not necessarily destroying the colony. A good colony with a poor queen can often be requeened.

Remove from breeding consideration any colony that shows:

• Aggression or excessive following
• Repeated poor brood pattern
• High varroa levels compared with similar colonies
• Poor wintering without an obvious management cause
• Confirmed brood disease
• Chronic queen problems
• Unacceptable swarming tendency

At the same time, avoid narrowing your bees too much. Keep several unrelated or less closely related lines available. Where your own apiary is small, cooperation with trusted local beekeepers is the best way to maintain diversity while still improving stock.

Records that make breeding repeatable

Good records are the difference between breeding and guessing. You need to know which colonies supplied larvae, which supplied drones, where queens mated, and how the daughters performed.

Bee Hive Tracker can be useful here because breeding decisions depend on linked records: colony history, queen lineage, inspection notes, photos, varroa counts, mating nuc outcomes and next actions.

Minimum records to keep:

• Colony ID and apiary location
• Queen origin, age and marking colour
• Breeder mother ID
• Drone-producing colony IDs
• Trait scores and dates
• Graft date and number of grafts
• Cell acceptance rate
• Mating nuc ID
• Mating site and movement dates
• First eggs seen
• First sealed brood pattern assessment
• Temperament score
• Varroa monitoring results and treatments
• Disease observations and any inspector involvement
• Final decision: keep, requeen, sell, combine, split or remove from breeding

After one season, records help you compare graft acceptance, mating success and early queen quality. After two or three seasons, they begin to show whether daughter colonies from certain lines consistently winter well, stay calm, manage mites better or produce more surplus honey.

Disease and legal responsibilities

Never breed from diseased colonies. Breeding from unhealthy stock spreads problems and makes selection data unreliable.

American foulbrood and European foulbrood are notifiable diseases in the UK. If you suspect foulbrood, stop moving bees, equipment or frames from the apiary and contact the appropriate bee inspector or the National Bee Unit for guidance. Early reporting protects your own bees and neighbouring apiaries.

Good breeding practice also means:

• Maintaining strict apiary hygiene
• Cleaning or replacing suspect equipment as advised
• Not selling queens or nucs from colonies with unresolved disease concerns
• Keeping movement and health records
• Following current UK guidance for varroa monitoring and treatment
• Checking current rules before selling or moving bees

Varroa management is especially important. If mite pressure is uncontrolled, you cannot fairly judge whether a line is robust or simply overwhelmed.

Practical examples

Example 1: improving overwintering

Year 1: Review all colonies in spring. Exclude any with disease, aggression or serious queen problems. Select the top colonies that wintered strongly, had adequate stores, built up steadily and showed good temperament.

Year 2: Rear queens from several of those colonies. Use drone-producing colonies from the same high-performing group. Mate queens in the best-controlled site available. Overwinter daughter colonies under similar conditions.

Year 3: Compare daughter colonies with the rest of the apiary. Keep only lines that repeat good wintering without introducing new faults.

Example 2: selecting for hygienic behaviour

Test 20–30 colonies using a pin-kill or freeze-killed brood test. Shortlist colonies removing a high percentage of dead brood within 24–48 hours, but only if they are also calm, healthy and productive enough.

Rear queens from the best group and use selected drone colonies where possible. Re-test daughter colonies the following season. Keep the lines that maintain good hygienic behaviour without sacrificing temperament or wintering.

Common mistakes to avoid

Breeding from one exceptional colony

One strong colony can be useful, but relying on it too heavily risks spreading hidden weaknesses. Use several breeder mothers.

Ignoring drones

Queen selection alone is not enough. Plan drone production early and use selected drone colonies.

Selecting on honey yield only

High yield is valuable, but not if the bees are aggressive, disease-prone or poor winterers. Use a balanced score.

Judging too quickly

A young queen’s first brood pattern matters, but real breeding value is shown over time. Assess daughter colonies through a full season and winter where possible.

Poor records

Without clear records, you cannot identify which line worked. Keep records at each step and link queen outcomes back to breeder colonies.

Breeding from sick colonies

Never use colonies with unresolved disease problems. Health comes before production.

Tools and kit checklist

Essential equipment:

• Queen-rearing method of choice, such as grafting tools, cups or cut-cell equipment
• Strong cell-builder colonies
• Mating nucs or nucleus boxes
• Queen cages and introduction cages
• Queen marking pens and records of marking colours
• Drone foundation or suitable drone comb
• Varroa monitoring equipment
• Clean spare frames and nuc equipment
• Accurate record system, such as Bee Hive Tracker or a dedicated breeding notebook

Useful extras:

• Cell bar frames and protectors
• An incubator for advanced queen-rearing operations
• Magnification or good lighting for grafting
• Dedicated mating apiary equipment
• Instrumental insemination access or training, if needed

Immediate next steps

If you want to start breeding better bees this season:

1. Review last year’s records and exclude unsuitable colonies.
2. Choose three or four traits to select for.
3. Score your colonies consistently before queen rearing begins.
4. Select several breeder mothers, not just one.
5. Prepare drone colonies at least six weeks before expected mating.
6. Start with a manageable batch of queen cells.
7. Record grafting, mating and daughter queen performance.
8. Reassess results after winter before deciding which lines to continue.

Breeding better bees is not a one-off queen-rearing exercise. It is a cycle of selection, mating, testing and record review. Done patiently, it gives you bees that are better suited to your area, your management and the conditions they actually face.

Sources Used

• https://www.nationalbeeunit.com/
• https://www.gov.uk/government/organisations/animal-and-plant-health-agency
• https://www.bbka.org.uk/
• https://bibba.com/