Anise Hyssop
A stunning native perennial with lavender-blue flower spikes and licorice-scented leaves that attract bees and butterflies en masse.
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Meet Anise Hyssop
A stunning native perennial with lavender-blue flower spikes and licorice-scented leaves that attract bees and butterflies en masse. The fragrant foliage makes excellent tea and the edible flowers add sweet anise flavor to salads and desserts. Grow in full sun with lean, well-drained soil for the most prolific flowering and strongest fragrance.
When to plant Anise Hyssop
Anise hyssop is easy from seed and often flowers in its first year. Sow indoors 6-8 weeks before last frost, pressing tiny seeds onto the surface of moist compost—they need light to germinate. Keep at 18-22°C and expect germination in 7-14 days. Harden off and transplant after all frost danger has passed. Can also be direct-sown outdoors after last frost. Self-sown seedlings appear reliably in subsequent years and can be transplanted to desired locations.
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Used once to set your season · never sharedHow to grow Anise Hyssop
Anise hyssop is a showstopping native perennial that deserves a prominent spot in every herb and pollinator garden. Growing 60-120cm tall with upright, branching stems, it produces dense spikes of lavender-blue flowers from midsummer through autumn. Plant in full sun with lean to average, well-drained soil. Space plants 30cm apart and avoid overly rich conditions, which produce rank growth at the expense of essential oil concentration.
This prairie native is remarkably drought-tolerant once established and thrives in hot, sunny conditions where many herbs struggle. Water regularly during the first season to establish deep roots, then reduce—anise hyssop actually performs better with less pampering. The aromatic foliage smells strongly of anise or licorice and can be harvested throughout the growing season.
Deadhead spent flower spikes to prolong blooming, or leave some to self-sow for natural colonies. Cut plants back to 10-15cm in late autumn or early spring. Divide clumps every 3-4 years to maintain vigor. Anise hyssop is short-lived compared to other perennials (3-5 years) but self-seeds reliably to maintain its presence in the garden.
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Anise Hyssop's best neighbours
Anise hyssop is one of the best pollinator-attracting companions for the vegetable garden. Its flowers draw bees, butterflies, and beneficial wasps that help pollinate nearby crops and control pest populations. Plant alongside tomatoes, squash, and peppers to boost pollination rates. It pairs beautifully with echinacea, lavender, and other prairie-style perennials in ornamental borders.
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Feed it well
Anise hyssop thrives in lean to average soil with excellent drainage, pH 6.0-7.5. It actually produces more concentrated essential oils and aromatic compounds in poor soils—rich feeding dilutes flavor. Sandy loam or gravelly soil is ideal. Avoid heavy clay unless amended with generous quantities of grit. No fertilizer is needed for established plants. A thin layer of compost in spring is more than sufficient.
Ideal Temperature
Hardiness Zone Compatibility
From seed to harvest, stage by stage
Seed Sowing
Anise hyssop seeds are small and require light to germinate. Sow them on the surface of moist seed-starting mix and press gently without covering. Seeds benefit from a brief cold stratification period of 1-2 weeks in the refrigerator before sowing to improve germination rates.
Germination
Seedlings emerge with small, rounded cotyledon leaves followed by the first set of true leaves, which are ovate with serrated margins. The characteristic square stems of this mint-family plant become visible early on.
Vegetative Growth
Plants develop rapidly, forming upright, branching stems with pairs of opposite leaves. The foliage takes on its mature appearance with prominently toothed, heart-shaped leaves that release a strong anise-mint aroma when touched. Plants typically reach 30-50 cm during this phase.
Bud Formation
Dense terminal flower buds form at the tips of each stem, initially appearing as compact green-purple clubs. The buds elongate into the characteristic spike shape, with individual calyxes becoming visible along the developing inflorescence. Plants reach 60-90 cm tall.
Flowering
Lavender to violet-purple tubular flowers open progressively from the base of each spike upward. The blooming period extends over 6-8 weeks, with each spike remaining attractive for several weeks. Plants reach their mature height of 60-120 cm and become magnets for pollinators.
Seed Set and Dormancy
After pollination, the flower spikes develop small nutlet seeds inside the persistent calyxes. The seed heads turn brown and dry on the plant, providing winter interest and food for goldfinches and other seed-eating birds. The plant dies back to its crown with the first hard frosts.
Maintain soil moisture with a fine mist sprayer and keep temperatures around 18-22°C. A humidity dome or plastic wrap over the seed tray helps retain consistent moisture during the germination period.
Caring for Anise Hyssop month by month
What to do each month for your Anise Hyssop
July
You are hereNo specific care tasks for this month.
Harvesting Anise Hyssop
Harvest anise hyssop leaves anytime during the growing season by cutting stems just above a leaf node to encourage branching. For the most intense flavor, harvest just as flower buds begin to open. Cut entire flower spikes when they are fully colored but before individual florets begin to fade. The flowers are edible and make stunning purple garnishes. For drying, cut stems in the morning after dew has evaporated.
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Storage & Preservation
Bundle stems and hang upside down in a warm, dry, well-ventilated area away from sunlight. Leaves and flowers dry in 5-7 days. Strip dried leaves and flowers from stems and store in airtight glass jars for up to 12 months. The dried herb makes exceptional herbal tea. Fresh leaves can be frozen in ice cube trays with water for year-round use. Anise hyssop also infuses beautifully into honey, simple syrups, and vinegar.
What goes wrong — and the fix
Powdery Mildew
DiseaseWhite powdery coating on leaves, especially in humid conditions with poor air circulation late in the season.
Japanese Beetles
PestSkeletonized leaves and damaged flower buds from metallic green-bronze beetles feeding in groups.
Troubleshooting Common Problems
Leggy, floppy growth indicates too much shade or overly rich soil—move to full sun and stop fertilizing. Self-seeding can become excessive in ideal conditions; deadhead before seeds mature if this is a concern. Short lifespan of 3-5 years is normal; allow self-sowing or take cuttings to maintain plantings. In very humid climates, powdery mildew can be persistent—choose mildew-resistant cultivars like Blue Fortune.
Growing Tips
- Cold-stratify seeds for 1-2 weeks in the refrigerator before sowing to break dormancy and improve germination rates from around 50% to over 80%. Place seeds between damp paper towels in a sealed plastic bag.
- Surface-sow seeds and press gently into the soil without covering, as anise hyssop requires light exposure to trigger germination. Keep the seed-starting mix consistently moist but not waterlogged.
- Choose a planting site in full sun with well-drained soil. Anise hyssop tolerates a wide range of soil types including clay, loam, and sandy soils, but performs best in moderately fertile ground with a pH of 6.0-7.5.
- Space plants 30-45 cm apart to allow for adequate air circulation, which helps prevent powdery mildew in humid climates. In mixed borders, place anise hyssop behind shorter plants to take advantage of its upright 60-120 cm stature.
- Pinch the growing tips when plants reach 20-25 cm tall in late spring to encourage bushy, multi-stemmed growth and significantly more flower spikes. This single step can double the number of blooms per plant.
- Water deeply once per week during dry periods rather than frequent light watering. Established plants are moderately drought-tolerant and prefer soil that dries out slightly between waterings. Avoid overhead irrigation to reduce disease risk.
- Deadhead spent flower spikes by cutting stems back to just above a leaf node to stimulate a second and sometimes third flush of flowers extending the bloom season well into autumn.
- Divide mature clumps every 3-4 years in early spring just as new growth appears. Dig the entire root mass, split it into sections with a sharp spade, and replant divisions immediately at the same depth in amended soil.
- Leave some dried seed heads standing through winter to feed goldfinches and other seed-eating birds, and to allow natural self-sowing that fills in gaps and creates a naturalized meadow effect.
- Watch for powdery mildew during hot, humid weather. Improve air circulation by thinning crowded stems and avoid wetting foliage when watering. Resistant cultivars like 'Blue Fortune' can help reduce disease issues in problem areas.
Pick your Anise Hyssop
Blue Fortune
The most popular garden cultivar with dense, long-lasting blue flower spikes on sturdy stems. Sterile hybrid that does not self-seed.
Golden Jubilee
Chartreuse-gold foliage with lavender flowers, providing stunning color contrast. Slightly shorter than the species.
Black Adder
Dramatic dark purple buds opening to smoky violet flowers. One of the longest-blooming Agastache selections.
Agastache foeniculum (wild type)
The straight species native to North American prairies. Self-sows freely and attracts the widest range of pollinators.
A single packet of anise hyssop seeds (approximately 500-1,000 seeds) costs around $3-5 and can establish a permanent, self-sustaining patch that returns year after year. Once established, the perennial root system produces increasingly larger clumps that can be divided every 3-4 years to create new plants at no cost. A mature plant yields enough fresh leaves and flowers for daily herbal tea throughout summer and sufficient dried material for winter use. With specialty anise hyssop herbal tea retailing at $8-14 per box, a home grower can easily save $50-80 annually while enjoying a fresher, more aromatic product than any commercially available alternative.
Quick recipes
Fresh Anise Hyssop Herbal Tea
10 minutesA naturally sweet, aromatic herbal infusion made from fresh anise hyssop leaves and flowers. The tea has a gentle licorice-mint flavor that is soothing and refreshing, delightful served hot for relaxation or chilled over ice on warm summer afternoons.
5 ingredientsAnise Hyssop Flower Butter
15 minutes plus 2 hours chillingA fragrant compound butter infused with finely chopped anise hyssop flowers and leaves. Lovely melted over grilled fish, spread on warm scones, or tossed with roasted summer vegetables. The purple flower petals create beautiful flecks throughout the golden butter.
5 ingredients
Anise Hyssop and Berry Summer Salad
15 minutesA vibrant summer salad that pairs the sweet licorice notes of anise hyssop with fresh berries, mixed greens, and a light vinaigrette. The edible purple flowers make a stunning garnish that is as flavorful as it is beautiful.
6 ingredientsCulinary Uses
Anise hyssop is a versatile culinary herb with a sweet licorice-anise flavor. The leaves make exceptional hot or iced tea and infuse beautifully into honey, cream, and simple syrups. Sprinkle fresh or dried leaves into fruit salads, baked goods, and grain dishes. The edible flowers add both color and flavor to desserts, cocktails, and salads. Try adding leaves to shortbread or scone dough for a subtle anise note.
What's inside
Health Benefits
- Supports respiratory health and helps soothe coughs, sore throats, and mild chest congestion, a use rooted in centuries of Indigenous herbal medicine traditions across the Great Plains.
- Contains rosmarinic acid and other polyphenolic compounds with demonstrated anti-inflammatory and antioxidant properties that may help protect cells from oxidative stress.
- Acts as a gentle digestive aid, easing bloating, nausea, and mild stomach discomfort when consumed as a warm herbal tea after meals.
- Provides mild calming and stress-relieving effects due to its aromatic volatile oils, making it a popular choice for relaxation teas and aromatherapy preparations.
- Exhibits antimicrobial properties in laboratory studies, with its essential oils showing activity against certain bacteria and fungi, supporting traditional wound-care applications.
- May support cardiovascular health through its flavonoid content, particularly tilianin, which has been investigated for vasodilatory and anti-hypertensive effects in preliminary research.
Where Anise Hyssop comes from
Anise hyssop (Agastache foeniculum) is a herbaceous perennial native to the north-central regions of North America, ranging from the Great Plains of the United States northward into the southern Canadian provinces of Ontario, Manitoba, Saskatchewan, and Alberta. It thrives naturally in dry prairies, open woodlands, and along meadow edges, where its tall purple flower spikes stand out among native grasses and wildflowers. The plant holds deep cultural significance for numerous Indigenous peoples of the region. The Cheyenne brewed its leaves into a soothing tea and used it to treat coughs and colds. The Chippewa (Ojibwe) valued it as a remedy for chest pain and as a pleasant beverage herb, while the Cree used it to relieve heart ailments and as a general tonic. Beyond medicine, the leaves were used to flavor foods and were sometimes bundled with stored belongings for their pleasant fragrance. European settlers in the prairies quickly adopted anise hyssop from Indigenous traditions, incorporating it into their own herbal apothecaries and kitchen gardens. By the nineteenth century it had gained recognition in American horticultural circles for both its culinary versatility and its outstanding value as a bee plant. Beekeepers in the upper Midwest planted extensive stands to support honey production, a practice that continues today. In the twentieth and twenty-first centuries, plant breeders have developed ornamental cultivars such as 'Blue Fortune', a sterile hybrid prized for its long bloom season and compact habit, and 'Golden Jubilee', which features chartreuse-gold foliage. Modern herbalists continue to recommend anise hyssop tea for respiratory and digestive support, while chefs in the farm-to-table movement have embraced its edible flowers and aromatic leaves as a sophisticated culinary herb. Today, anise hyssop is celebrated worldwide as a pollinator garden essential, a low-maintenance perennial, and a fragrant, multi-purpose herb that bridges Indigenous tradition with contemporary gardening and cuisine.
Anise Hyssop: did you know?
Fascinating facts about Anise Hyssop
Anise hyssop is neither related to anise (Pimpinella anisum) nor true hyssop (Hyssopus officinalis) despite its common name. It belongs to the mint family (Lamiaceae) and is native to the prairies and meadows of North America.
Anise Hyssop questions, answered
When should I plant Anise Hyssop?
What are good companion plants for Anise Hyssop?
What hardiness zones can Anise Hyssop grow in?
How much sun does Anise Hyssop need?
How far apart should I space Anise Hyssop?
What pests and diseases affect Anise Hyssop?
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What are the best Anise Hyssop varieties to grow?
What soil does Anise Hyssop need?
Is anise hyssop a perennial or annual plant?
Can I eat anise hyssop leaves and flowers?
How do I attract more pollinators with anise hyssop?
What is the difference between anise hyssop and other Agastache species?
Does anise hyssop spread aggressively in the garden?
When and how should I harvest anise hyssop for drying?
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From the “Overview” sectionPlant these alongside Anise Hyssop
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