Glossary
An explanation of the different types of beeswax comb that bees build, each with a distinct cell size optimized for its intended function. Worker brood cells, drone brood cells, honey storage cells, and transition comb all have different dimensions and serve different colony needs.
Worker brood comb has cells approximately 5.2-5.4mm wide (measured center-to-center of opposing flat sides). This size is optimized for developing worker bees. Foundation manufacturers stamp this cell size into their wax or plastic sheets to guide the bees' construction.
Drone brood comb has noticeably larger cells, approximately 6.9mm wide, reflecting the larger body size of drones. Bees build drone comb naturally on areas of the frame not guided by foundation, usually at the bottom or edges. The presence of extensive drone comb can indicate a colony's preparation for reproduction (swarming).
Honey storage comb in the honey supers often has cells slightly deeper and sometimes slightly wider than brood comb because the cells need only store honey, not contain developing bees. Bees may also draw cells at a slight upward angle to prevent liquid honey from dripping out before it is capped.
Transition comb, where worker-sized comb transitions to drone-sized comb, contains irregularly sized cells that serve as structural accommodation. This transition zone is where bees demonstrate their remarkable engineering flexibility, creating smoothly graded size changes between the two cell types.
Cell size affects brood development timing, varroa mite reproduction (mites produce more offspring in larger drone cells), and honey storage capacity. Some natural beekeeping approaches use small cell foundation (4.9mm) theorizing that smaller cells may slow varroa reproduction, though research results are mixed.
The bottom of frames, below the foundation, is the only area where bees are free to choose their cell size. Worker-sized foundation guides construction above. The natural tendency to build drone comb in these unguided areas reflects the colony's reproductive drive to produce mating drones.
Yes. Foundationless frames allow bees to build entirely natural comb with their preferred cell sizes. This approach is popular in natural beekeeping but requires careful management since the comb is more fragile and may not align neatly within the frame, complicating inspection and extraction.
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