Centranthus ruber ‘Alba’ (White Valerian) $13.95 5″ Centranthus ruber 'Alba' (White Valerian) quantity Add to cart Category: Perennials Related products Astilbe arendsii ‘Diamant’ (False Spirea) $23.00 Add to cart Achillea ‘Moonshine’ (Yarrow) $15.25 Add to cart Alyssum montanum Mountain Gold (Gold Alyssum) $15.25 Add to cart Achillea Milly Rock Red (Yarrow) $14.95 Add to cart