Sanguisorba officinalis 'Tanna'

Erect stems bear densely packed, dark red / purple flowerheads with red stamens in midsummer. They seem to float in large numbers above the decorative mounds of attractive, fern-like  grey / green foliage. Great for adding vertical interest and movement to a mixed herbaceous bed, or mixing with ornamental grasses for a naturalistic planting. I am really starting to love these low maintenance plants