syn. 'White Rain'. The beautiful white flowered form of this front of the border favourite produces masses of it's whorled flower stems all summer to 40cm. Cut back if needed. Drained soil in sun. Easy and hardy.
Light purple flowers in reddish calyces and stems give a warm effect in the garden. More upright habit than 'Purple Rain' and a long flowering season. Sun, average soil, 40cm.