Veronicastrum or Culver's Root
Tall architectural perennials with thin toothed leaves arranged in whorls around a central stem. In summer they throw up tall racemes of long thin flowers.
Where to Site Your Veronicastrum
Flower borders and beds for both City and courtyard gardens.
How to Grow and Look after Your Veronicastrum
They are useful for a backdrop in a moist but well drained perennial border