Scientific Name
Agastache foeniculum
General Information
Anise hyssop is a short-lived perennial with the scent of basil and tarragon and a
It blooms midsummer into fall. Its spiky, blue blooms and bright green leaves tinged with purple make it a great ornamental. It is in the Lamiaceae or mint family and native to North America.
When to Plant
Plant in spring after last frost or in early summer.
Planting
Plant 18 to 24 inches apart in full sun. It will grow in part shade but will get lanky.
From seed: Grown easily from seed. To collect seed, allow flowers to dry on plants and bag the flower spikes.
Transplants: Easy to move plants and to divide in spring or fall.
Cuttings: Propagates by cuttings. This is the only way to propagate sterile hybrids like ‘Blue Fortune’, a cross between A. foeniculum and A. rugosa which is Korean hyssop.
Soil Requirements
Prefers slightly acidic soil that drains well.
Water Requirements
Water regularly after planting. Once established, allow soil to dry out between waterings.
Fertilizing
Add compost annually.
Pollination
Anise hyssop is pollinated by bees. It attracts many pollinators, including bees, butterflies, and hummingbirds.
Harvesting
Harvest leaves after dew dries but before heat of day and just before the plants begin to flower.
Storage
Bundle sprigs and hang upside down to dry in a cool, dark space. When leaves are dry, strip from stem and store in a glass jar.
Good Varieties for Marin
Readily available cultivars include ‘Alabaster’ and ‘Black Adder’.
Helpful Tips
Can grow to 4 feet tall so works best in middle or back of perennial beds.
Common Problems
Susceptible to root rot in wet soils.
Pests- Diseases & More
Not usually bothered by pests and diseases. If aphids, whiteflies, or mites appear, hose off.