Black titi causes purple brood, in which honey bee larvae turn purple and die.
The association between Cliftonia monophylla and purple brood is long-established in the southeastern United States and consistently reproduced — colonies moved into black titi areas develop it, colonies moved out recover. The responsible compound has not been identified, so the mechanism is unknown while the effect is not in doubt. Beekeeping practice in the region is built around avoiding the flow.
What this does not claim: This does not claim the honey is harmful to people — adult bees and human consumers are unaffected. Nor does it claim the mechanism is understood; the responsible compound has never been identified.
- HoneyHQ editorial synthesis — HEKNO Ltd · HoneyHQ synthesis