Your Wicki link says:
"Oleander is one of the most poisonous commonly grown garden plants.
According to the American Cancer Society, the trials conducted so far have produced no evidence of benefit, while they did cause adverse side effects.
Oleander is a common cause of poisoning and death in tropical and subtropical countries, with 170 cases seen at a single hospital in Sri Lanka."
You must be joking with us!
I can just see it now. Here sweetheart you should munch on these poisonous flowers just because Dquixote & Brightside said so. No, I can't find any documents supporting these flowers, and I can't find any doctors that are are recommending it. She would laugh at at me!
BTW, I have just added a new time tested & proven routine to my Iodine research... Mix LugolsIodine with DMSO and apply alternating lines across the breast tumor. DMSO is a carrier to carry Iodine deep into the cancer tissues.