Red Admiral host plant: mint family??

[Sunsol Daniels]

>Ideally, I'm trying to come up with a non-stinging plant that is easy 
for
>teachers to raise in elementary school butterfly gardens. Baby's Tears
>(Urtica ssp), while non-stinging, can be finicky.
>
>TIA!  Sheri (webmistress at mty.com)

Sheri,
 
Pellitory is great!  Non-stinging and grows easily.  It likes shade, so I 
plant it where it gets afternoon sun only.  It is a common weed.  Don't 
expect to find it at the nursery.

s