This grower is sure of this plant identification.
Lovely stout lilac-blue flower spikes top stems with whorls of pointed leaves down the entire length. An American native that attracts pollinators.
An outstanding eastern North American native wildflower, deserving of a special spot in any sunny border. This selection forms a tall, bushy clump of deep green leaves, bearing stocky, branching, lilac-blue candelabra-like flower spikes. Flowering starts midsummer and continues into the autumn. Outstanding as a cut flower.
Veronicastrum genus. This is a genus in the Plantaginaceae family which, in some systems is placed within the Veronica genus. These herbaceous perennial plants are characterised by tapering flowering spikes and lanceolate leaves.