Agastache rugosa, a delightful addition to any garden, is a hardy perennial herb boasting vibrant purple flowers that attract pollinators and hummingbirds. Native to East Asia, this member of the mint family is also known as wrinkled giant hyssop, Korean mint, purple giant hyssop, Indian mint, Chinese patchouli, or Huoxiang.
Agastache rugosa thrives in full sun and well-drained soil with average fertility. It's drought-tolerant once established but prefers regular watering during establishment. This herb is hardy in zones 5-9, making it a low-maintenance addition to your garden.
Sow Agastache rugosa seeds directly into the garden after the last spring frost date. Thin seedlings to about 12-18 inches apart. Water regularly until established, then allow plantings to go dormant in summer heat. Deadhead spent blooms to encourage re-blooming and prevent self-seeding.
Agastache rugosa is generally pest-resistant but may suffer from powdery mildew or root rot if overwatered. Prune back foliage if mildew appears, and adjust watering habits to promote healthy growth.
Harvest flowers for bouquets or use fresh in salads, stir-fries, and tea blends. The leaves can be dried for later use in potpourri or sachets. In the landscape, enjoy the vibrant color and sweet herbal fragrance of this versatile herb.