I have a volunteer plant that sure looks like one:
I also have a volunteer anthill in my garden that I've flooded numerous times. Mine are leafcutter ants
So, I gathered a bucket of them
And threw them on top the hill. (I forgot to crush them, although many are torn due to me ripping them off the bush) also added a few berries.
So, if this is really the right plant, and it works, I'd be glad to mail you some if you want to send me a p. m.