The host plant for this butterfly is the Tulip tree (Tulip Poplar), which is one of the first trees I planted in my yard over 30 years ago.
July 24, 2011 I added some photos from my yard.
April 16, 2011, I am adding photos of Tiger Swallowtails taken in my sister's yard in Pettigrew, AR (Madison Co.).
I mowed my pasture today and left a large patch of purple Henbit as I think it's pretty and the dogs like to munch on it. I noticed this Tiger Swallowtail checking out the Henbit so I ran in the house and got my camera. These were taken with a 300mm lens.