Nannyberry viburnum (viburnum lentago) blooms in spring with a fantastic display of large white flowers that offer plentiful support to early season pollinators. The prolific flowering gives way to abundant fruits that are highly attractive to birds. Nannyberry hosts an array of leopidoptera – butterflies and moths – including the Holly Blue Butterfly (Celastrina argiolus), Sami cynthia (a large silkmoth), Daraspa choerlius (a sphinx moth), and Hemaris (the Hummingbird Clearwing moth). These caterpillars overwinter in the leaf litter below the shrub, so please leave those leaves! Nannyberry is one of the largest Viburnum shrubs at 15-20 feet, and is very adaptable, growing well in a wide range of soil conditions. It can be found growing natively in low woods or near stream banks in full to partial sun.