The Gulf fritillary or passion butterfly (Agraulis vanillae) is a bright orange longwing butterfly most commonly found in southern areas of the United States. The butterfly is attracted to Lantana flowers for nectar and Passion flower vines for depositing their eggs. The Pardoll's put a Passion flower vine on their patio and they carefully monitor and photograph the butterfly's life cycle. The vine is eaten down to the bare earth but returns to full foliage each season to host another cycle of life for these butterflies.