Excerpt:
Although many nectar-bearing plants with toxic constituents are known, the incidence of human poisoning by honey is extremely low. Honeybees forage for miles around the colony and no doubt occasionally encounter sources of toxic nectar, but the predominating major nectar sources compete for attention and provide great dilution of any toxic nectar collected. Additionally, some nectars are sufficiently toxic to bees that they fail to return to the hive.
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