>This is not directly related to queen rearing but bolsters the idea that using old comb for grafting is not harmful and it's a lot easier to graft with dark combs.
I don't know if this has been communicated here, bee-l is very comprehensive and very good quality information. But I think it doesn't matter if I put a dark comb with the youngest broods or a light comb horizontally on the breeding bee colony. It depends on the workers how many will be accepted.
https://postlmg.cc/LJPm8zqF
Gustav Palan
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