This grower is sure of this plant identification.
Beautiful, late-flowering shrub, commonly known as "butterfly bush".
This one is lilac/ mauve coloured.
Already sizeable plant in large pot. Would suit corner of garden
Butterfly bush, Summer lilac, Orange eye
Buddleja davidii (Butterfly bush). This species of shrub will attract large numbers and varieties of butterflies to your garden. In midsummer long dense flower clusters will appear in profusion and are available in colours that range from deep midnight purple to white, yellow and pink. You should keep them trimmed for a neat appearance and deadhead to prolong the flowering.
They are fully to half hardy, and will require full sun with fertile well drained soil. Suitable for a mixed or shrub border, they are generally easy to grow. Prune hard in winter to control shape.
Banks, hedging, specimen, ornamental, fragrance, border, cutting bed, container. Suitable for coastal conditions.