Rosebay Willowherb

Chamaenerion angustifolium

Once dismissed as a troublesome weed of disturbed ground, rosebay willowherb has been reclaimed by naturalistic designers for its tall, luminous spires of vivid magenta-pink flowers that blaze through summer with unrestrained wildness and are irresistible to bees and butterflies. It requires space and firm management but rewards with a drama that few planted perennials can match.