Tiger Swallowtail

Today this Tiger Swallowtail landed on a Long-leaf Speedwell in Erika's Garden.  Long-leaf Speedwell is a common garden plant, and is attractive to butterflies, bees, and birds.  The plant is resistant to deer browsing. I do not know if this speedwell is native to North America, as I have read conflicting accounts on the internet.  The butterfly is native, and was drawn by John White who was commander of Sir Walter Raleigh's third expedition to North America in 1587 (University of Florida, 2007).