Queen Excluders and Super Management Best Practices
When and how to use a queen excluder to keep brood out of honey supers, and the alternatives beekeepers use to draw bees upward without one.
What a Queen Excluder Actually Does
A queen excluder is a flat grid, traditionally made of wire but now often produced in plastic, with openings sized to let worker bees pass through freely while physically blocking the larger queen from moving into whatever space sits above it. Placed between the brood box and the honey supers, its purpose is straightforward: keep the queen confined to the brood area so that supers fill with clean, brood-free honeycomb that can be harvested and extracted without cutting through patches of brood, and without contaminating the honey crop with anything from the brood nest.
The trade-off, and the reason some experienced beekeepers avoid excluders entirely, is that they can also create a partial barrier that some worker bees are reluctant to cross, sometimes slowing the colony's uptake of newly added super space, particularly if the excluder is installed clumsily or too early relative to colony strength.
Getting the Timing and Installation Right
Installing an excluder too early, before the brood nest below has genuinely filled its available space and begun pressing upward, tends to produce the worst of both worlds: workers show little urgency to move up through an unfamiliar barrier into supers the colony does not yet feel crowded enough to need. Waiting until the brood nest is well established and visibly expanding, with the colony already showing signs of wanting more room, gives the excluder a much better chance of being adopted quickly rather than resisted.
Having at least one super above the excluder already drawn out, rather than entirely undrawn foundation, helps considerably, since bees are generally more willing to move up into comb that already looks and smells like usable storage space than into a bare sheet of foundation on the far side of an unfamiliar grid. Fitting the excluder cleanly, with minimal gaps at the edges where it meets the hive walls, also prevents the burr comb and awkward bridging comb that tends to build up in any small gap left along the excluder's margins.
Alternatives to a Physical Excluder
Some beekeepers prefer to manage brood and honey separation without a physical excluder at all, relying instead on the colony's natural tendency to keep the queen in the warmest, most central part of the nest and to store honey progressively further from that centre. Careful frame arrangement within the brood box, deliberately positioning honey and pollen frames at the outer edges and keeping the queen's preferred laying area toward the centre, can achieve a broadly similar separation without the potential resistance an excluder sometimes introduces.
Checkerboarding, a technique where alternating frames of drawn comb and undrawn foundation are interspersed in the upper super, is another way some keepers encourage bees to move upward and begin working new space more readily, on the theory that the mixed pattern stimulates the colony's instinct to fill perceived gaps in its storage area. These alternatives require more careful, hands-on frame management than simply fitting an excluder, and most beginners find a standard excluder considerably more forgiving and predictable while they build experience.
Removing Excluders for Winter
An excluder left in place through autumn and winter can become a genuine liability rather than a helpful tool, since a cluster that moves upward through the hive as it consumes stores during winter can become separated from the queen if she is unable to follow the cluster's movement past the grid. This isolation, sometimes fatal, is one of the clearest and most consistently cited reasons to remove queen excluders before winter rather than leaving them in year-round out of habit.
Most experienced keepers therefore treat the excluder as a seasonal tool, fitted once the colony is genuinely ready to expand into supers during the productive part of the year, and removed again once the last honey harvest is taken and the colony is being prepared for winter, ensuring the queen has unrestricted access to follow the cluster wherever it needs to move through the colder months.
Frequently Asked Questions
Do queen excluders really slow bees down entering supers?
They can, particularly if installed too early or without an already-drawn super above them, since some worker bees are initially reluctant to cross an unfamiliar barrier into space the colony does not yet feel pressed to use. Timing installation to when the brood nest is genuinely expanding, and providing at least one drawn super, reduces this effect considerably.
Why should I remove the queen excluder before winter?
A wintering cluster moves upward through the hive as it consumes stores, and an excluder left in place can prevent the queen from following that movement, isolating and potentially killing her. Removing the excluder once the last honey harvest is taken avoids this risk.
Is checkerboarding a replacement for a queen excluder?
Not exactly. Checkerboarding is a technique for encouraging bees to move up into a super more readily by alternating drawn and undrawn frames, but it does not physically prevent the queen from moving into that space the way an excluder does, so it is more often used alongside careful frame management than as a direct substitute.
Should beginners use a queen excluder?
Most experienced keepers consider a properly timed, well-fitted excluder the more forgiving and predictable option for beginners compared with relying purely on frame arrangement or checkerboarding, since it removes the guesswork of judging the colony's natural storage patterns.