Anise Hyssop (Agastache foeniculum)

Anise Hyssop (Agastache foeniculum)

Anise Hyssop is, very deservedly, a favorite. Its upright spikes of violet-lavender flowers start blooming mid-summer and just keep going. Its square stems and clean lines give it a natural structure that fits into both wilder prairie-style gardens and more curated beds. The foliage also has culinary value, with a flavor like a sweet mint/licorice and is incredibly aromatic when brushed against. Its upright form, soft coloring, and long-lasting bloom period make it one of the most rewarding native herbs to grow, a real delight to the senses. 

In southeastern Wisconsin, it thrives in full sun and well-drained soils, even in clay or sand. It handles heat and dry spells without issue and self-sows just enough to settle in without taking over. One of the best things about Agastache foeniculum is how many pollinators it draws in (bees, butterflies, hummingbirds, you name it). 

Growing Conditions
Light: Full sun
Soil: Medium to dry, well-drained soil; tolerant of clay and sand
Height: 2–4 feet
Spread: 1.5–2 feet; may self-sow lightly
Zones: 4–8
Bloom time: July through September

Wildlife Value
Anise Hyssop is a serious pollinator plant. It offers long-lasting nectar through the heart of summer when insect activity peaks, making it a consistent draw for native bees, hummingbirds, and butterflies. In our own garden, we regularly see goldfinches perched on the stems, feeding on seeds or just scouting from above the action

Blooms Alongside:
Spotted Beebalm (Blephilia ciliata), Prairie Cinquefoil (Drymocallis arguta), Stiff Goldenrod (Oligoneuron rigidum), Aromatic Aster (Symphyotrichum oblongifolium), Hairy Penstemon (Penstemon hirsutus), Cylindrical Blazing Star (Liatris cylindracea), Prairie Coreopsis (Coreopsis palmata)