light mauve flowers of alternate leaved butterfly-bush in may

alternate alternateleaved alternifolia arching bloom blossom botany branch bright bud buddleja bush butterflybush deciduous florescence flower flowers foliage garden green greenery hardy inflorescence lax leaf leafage leaved light lilac mauve may nature ornamental outdoors pale park pastel pendent pendulous perennial petal pink plant racemes scented season shrub slender spring stem twig violet weeping