Crofton Weed (E. adenophorum)
 

It appears Crofton Weed is quite common on our property. I know this
plant is toxic to horses, but is it also toxic to people in the same
way EUPATORIUM rugosum is? I think the toxic component is called
Trememtone in E. rugosum. There appears to be no information about
its toxicity to people on the internet.