Agastache foeniculum, commonly known as anise hyssop or blue giant hyssop, is a perennial herb native to North America, particularly widespread across the northern plains and Great Lakes regions. This aromatic member of the mint family (Lamiaceae) typically grows 2 to 4 feet tall, with square stems, opposite leaves, and dense spikes of lavender to violet-blue flowers that bloom from midsummer into early fall. The foliage emits a sweet, anise-like fragrance when crushed, adding sensory appeal to gardens and attracting a wide variety of pollinators, including bees, butterflies, and hummingbirds. Agastache foeniculum thrives in full sun and well-drained soils, showing excellent drought tolerance once established, and is often found in prairies, open woodlands, and along roadsides. Its long flowering period and nectar-rich blooms make it a cornerstone species for pollinator gardens and ecological restoration projects. Gardeners prize it for its resilience, aromatic qualities, and vibrant color that persists late into the season. Combining beauty, fragrance, and ecological benefit, Agastache foeniculum remains one of the most cherished native perennials for creating wildlife-friendly and drought-tolerant landscapes.