Anyone feed their chickens epazote (wormseed)

Old post, but I thought I'd add my experience.

I have a wild piece of my yard that was ta'en by epazote. I was surprised when a few of my new pullets got into it and seemed happy to consume. They have even taught the old birds to give it a try. After hearing about some toxicity in humans I took a look here, but found only this post.

I now pull up what I find and toss it to them. They almost always start in on it happily, but there is also always some left, so they seem to be self-regulating. Early in the Spring, when there is less green around, they eat more - too much and the strong taste comes through the eggs, so be warned. As for use as a wormer, it is used, but dosage is vague. I have not had any parasite troubles with my hens, but I'll not credit the weed without better evidence.