Are Agastache invasive?
Drought: Once established, Agastache plants are highly drought-tolerant, making them an excellent choice for xeriscaping or low-water gardens. Invasiveness: Agastache is not typically considered invasive, although it can self-seed under ideal conditions. Best Plants To Grow With Agastache Grow this perennial and its companions in any area that has good drainage and full sun. The best companions for Agastache include coneflowers, cosmos, coreopsis, and perennial salvia, which all bloom for many months and share Agastaches’ rugged good looks.
Is agastache cold hardy?
Agastache is a hardy perennial that can be grown in a wide range of USDA growing zones. While most varieties of Hyssop are hardy in zones 5-9, a few types will survive winters in zones 3 and 4. When & Where to Plant Agastache. Light: Agastache (or Anise Hyssop) grows and flowers best in full sun. They will survive part shade, especially afternoon shade in warmer climates, but may not flower as well. Soil: Agastache grows best on fertile, well-drained soils.