This is Buddleja davidii, also known as Summer Lilac and Orange-eye Butterfly Bush. This plant must be planted in full sun and will bloom from late Spring to Early Summer. This shrub will attract all kinds of wildlife. Birds, bees, and butterflies just love the honey scented blooms. Hummingbirds especially love this nectar giving bush. It would be to much to name all of the butterflies that use this plant right here, but I will name a few. Some of the documented butterflies that use this plant as a nectar source are the Small Tortoiseshell, Painted Lady, Palamedes Swallowtail, Zebra Swallowtail, Spicebush Swallowtail, Astyanax Red-spotted Purple, Funereal Duskywing, Red-spotted Purple, Rare Skipper, Monarch, and White Angled-Sulphur. A moth that has been spotted gathering nectar from this plant is the Snowberry Clearwing Moth. USDA Hardiness Zones 5 to 10a