plentitude of white flowers of viburnum opulus roseum in may

guelder rose viburnum opulus snowball water elder cramp bark european cranberrybush threelobed flowers white corymb nature green foliage greenery vegetation flora outdoors plant botany ornamental branch leaf leafage bud florescence inflorescence bloom blossom petal bush shrub season spring perennial deciduous park garden sterile boule neige globular globose guelderrose roseum