Agastache rupestris – Sunset Hyssop Posted on April 13, 2020 by Michelle Bohanan Mature height: 2-3′Mature spread: 2-3′Hardy to: 6,500Zones: 5-9Water requirement: LowExposure: Sun to filtered shadeFlower color: Orange-pinkFlower season: Mid-summer to fall Follow us on our social media: