Overview

Agastache is a genus of aromatic perennials in the Lamiaceae (mint) family. Comprising roughly 9–12 closely related species, these plants are prized for their spires of tubular flowers, fragrant leaves and ability to attract pollinators. Common names include hyssops and hummingbird mints, though they are distinct from true hyssop.

Characteristics

Members of the genus typically have square stems, opposite leaves and dense flowering spikes of bilabiate (two-lipped) blossoms. Flower colors range from purple and blue to pink, orange and white. Leaves often emit anise, mint or licorice scents when crushed because of essential oils in the foliage.

Distribution and taxonomy

Most species of Agastache are native to North America, while a single species occurs in eastern Asia. The group sits within the mint family and has been the subject of horticultural breeding, producing many garden hybrids. Taxonomic treatments vary, which is why species counts are given as a small range.

Cultivation and uses

Agastache is widely grown in ornamental borders, pollinator gardens and dry, well-drained sites. Plants prefer full sun and tolerate drought once established. The foliage can be used for herbal teas or light culinary flavoring, and the flowers are an important nectar source for bees, butterflies and hummingbirds.

Propagation and care

Propagation is commonly by seed, division or softwood cuttings. Good drainage, moderate fertility and removal of spent flower spikes extend bloom and plant vigor. Many cultivars are selected for compact habit, prolonged flowering and color variation.

Notable species and distinctions

  • Agastache foeniculum — often called anise hyssop for its licorice-scented leaves.
  • Agastache rugosa — a species with East Asian ties and aromatic foliage.
  • Garden hybrids — bred for flower color, size and cold tolerance.

Although related to other aromatic mints, Agastache is readily identified by its tall, nectar-rich flower spikes and distinctive scented leaves, making it a staple of wildlife-friendly and aromatic plantings.