Megkérdeztem GPT barátunkat a leander mérgező mézéről, érdekes a válasz:
Beesource mentions that oleander is "deadly poisonous," implying potential risks associated with its nectar.
beesource.com
Similarly, a thread on GotMead references sites stating that "oleander honey is toxic to bees and to humans." gotmead.com

Conversely, other sources indicate that oleander flowers do not produce nectar, making it unlikely for bees to create honey from them. A Reddit discussion points out that "oleander doesn't produce nectar, so... it cannot translate that poison to any honey made from it."
reddit.com
Additionally, the Wikipedia article on Nerium notes that "oleander flowers are nectarless and therefore cannot transmit any toxins via nectar." en.wikipedia.org