This is Lonicera xylosteum, also known as Dwarf Honeysuckle, European Fly Honeysuckle. These fragrant flowers attracts birds, bees, and butterflies. Growing up to 8 feet tall this shrub likes to live in full sun. From early Spring to Late Summer this shrub blossoms white. This shrub is deer resistant and is a larval host plant for the Spring Azure butterfly and the Snowberry clearwing moth. Lonicera xylosteum is also a nectar source for countless other butterflies and moths. USDA Hardiness Zones 4 to 6