Agastache scrophulariaefolia (Purple Giant Hyssop)
Agastache scrophulariaefolia (Purple Giant Hyssop)
120 (180)cm, Purple Giant Hyssop is a perennial makes impressively tall, upright stems with numerous white, rose to lilac-blue flowers in dense terminal spikes above broad lanceolate-oval leaves. Native of meadows throughout northern USA and southern Canada. For any humus rich, well drained soil in a sunny spot. VI-VIII.More Details »