Queen Rearing Methods Compared: Grafting, Miller, Doolittle and Cloake Board
A side-by-side comparison of the four main queen rearing systems used by UK beekeepers, with acceptance rates, timelines and equipment needs for each.
Why method choice matters
Every serious beekeeper eventually wants to raise their own queens rather than buy them in, whether to save money, improve local stock, or simply understand the process. The trouble is that queen rearing is usually taught as a single recipe, when in fact there are several well-established systems, each with different equipment demands, skill thresholds and acceptance rates. Choosing the wrong one for your circumstances is the single biggest reason first attempts fail.
The four systems most commonly used in the UK and further afield are larval grafting, the Miller method, the Doolittle method and the Cloake board system. They are not mutually exclusive: many experienced queen breeders use grafting for precision but borrow the Cloake board's colony management logic to run their cell builder. Understanding what each method actually asks of the bees, rather than just the mechanics, makes it much easier to pick a starting point.
Grafting: the precision method
Grafting involves physically transferring a young worker larva, ideally under 24 hours old, from its own cell into an artificial plastic or wax queen cup using a fine grafting tool. The grafted cups are then given to a queenless or hopelessly queenless 'starter' colony crammed with young nurse bees and stores, which draw the cups out into queen cells. Grafting gives the beekeeper full control over which larvae are used, how many cells are started at once, and exactly when the process begins, which is why commercial queen producers overwhelmingly favour it.
The drawback is the learning curve. New graspers often damage larvae or fail to keep them from drying out, and first-attempt acceptance rates of 50-60% are typical, climbing to 85%+ with practice and a magnifying lamp. A double grafting pass, where the first set of grafts is removed a day later and replaced with a second, fresher graft into already-primed cups, is a well-known trick for lifting acceptance rates once the technique is comfortable.
Miller and Doolittle: grafting-free alternatives
The Miller method dispenses with grafting altogether. A specially cut frame with triangular or notched wax edges is inserted into a strong colony; the bees draw comb along the notched edges and the queen is encouraged to lay in it. When the resulting larvae reach the right age, the comb edges are trimmed so that individual cells stand proud, and the colony is made queenless so it starts queen cells directly from the natural comb. It requires no grafting skill at all, which makes it popular with beginners and hobbyists who want a few queens a season without specialist tools, though it produces cells in irregular positions that are harder to handle later.
The Doolittle method sits between the two: a starter colony is used to begin cell acceptance for 24-48 hours, exactly as in grafting, but the emphasis is on the two-stage starter/finisher colony split rather than the grafting technique itself, and can be run either with grafted larvae or natural cell punches. Many modern descriptions of 'the Doolittle method' actually refer to this starter-then-finisher colony structure rather than the grafting act, since Doolittle was the first to formalise splitting the roles between a resource-rich starter and a longer-term finisher colony.
The Cloake board method
The Cloake board is a queen excluder-based insert with a solid slide that fits between two hive boxes. On day zero, the queen is confined below the board with the excluder in place and the slide inserted, cutting the top box off from her presence while leaving nurse bees and open brood connected by scent through the excluder mesh. This tricks the top box into behaving as though it is both broodful (motivated to feed larvae) and queenless (motivated to draw queen cells), producing very high acceptance rates without ever fully splitting the colony.
Grafted larvae are introduced into the top box a day after the slide goes in, and the colony builds cells for around two days as a false queenless unit before the slide is withdrawn, reuniting it with the queen's pheromone and converting it into a queenright finisher for the rest of development. Because the colony never truly loses its queen, brood rearing and foraging carry on almost undisturbed below, and a single strong colony can be recycled for multiple grafting rounds through a season, which makes the Cloake board a favourite of amateur queen breeders who don't want to run dedicated starter and finisher colonies.
Comparing timelines and outcomes
All four methods converge on the same underlying biology once cells are accepted: roughly three days from egg to larval selection age, cell capping around day 8-9 post-graft, and emergence at day 15-16 from the egg (or 10-11 days after a suitable graft). What differs is what happens before acceptance and how much labour and equipment it costs. Grafting demands a magnifier, grafting tool, and steady hands but scales well for producing dozens of queens from one operation. Miller needs almost no specialist tools but yields fewer, harder-to-transport cells. The Cloake board needs a one-off purchase of the board itself but then simplifies colony management enormously for repeat batches.
For a beekeeper planning their first queen rearing season, a sensible progression is to try the Miller method on a couple of frames to understand cell development without the pressure of grafting, then move to a Cloake board setup once comfortable, adding grafting skills once cell acceptance and finishing are second nature. Trying to master all three elements simultaneously in year one is the most common reason people give up on queen rearing before they see results.
Frequently Asked Questions
Which method has the highest acceptance rate?
The Cloake board system generally produces the highest and most consistent acceptance rates for hobbyist-scale queen rearing, often 80-90%+, because the colony is never fully queenless and continues to function normally below the board while still responding to the top box as if queenless.
Do I need to graft to use a Cloake board?
Most Cloake board setups use grafted larvae in cell cups placed above the board, but it is possible to use natural comb with young larvae cut into cell-cup-sized pieces if you want to avoid grafting, though acceptance and uniformity are usually lower.
How many queen cells can one starter colony produce?
A strong, well-fed starter colony can typically start 20-40 grafted cells in one batch, though quality drops if you push much beyond the colony's nurse bee capacity to feed royal jelly to that many larvae at once.
Is the Miller method suitable for a single-hive beekeeper?
Yes, it is one of the few queen rearing approaches that works reasonably well from a single strong colony since it does not require a separate starter and finisher, though yields will be modest, usually a handful of usable cells per round.