How to Grow Anise (Pimpinella anisum)
Anise is a fragrant annual herb grown for its sweet, licorice-flavored seeds and delicate, feathery foliage. Perfect for baking, herbal teas, liqueurs, and spice blends, it’s also a beautiful pollinator-friendly plant in the garden.
Quick Growing Facts
| Plant type | Warm-season annual herb |
| Days to germination | 14–21 days |
| Days to maturity (for seed) | 90–120 days |
| Light requirements | Full sun (6–8+ hours of direct light) |
| Soil | Well-drained, loose soil; pH about 6.0–7.5 |
| Spacing | 6–12 in (15–30 cm) between plants; 18–24 in (45–60 cm) between rows |
| Hardiness | Frost-tender; grow after danger of frost has passed |
When & Where to Grow Anise
Anise is a warm-season annual. It needs a long, sunny growing season to produce plenty of aromatic seeds.
- Outdoors: Sow after all danger of frost has passed and the soil has warmed to at least 60°F (15°C).
- Climate: Best in mild, warm summers. In cooler regions, choose the sunniest, most sheltered spot.
- Location: Full sun is essential. Choose a site that gets 6–8+ hours of direct sunlight daily.
- Good companions: Other sun-loving herbs like dill, fennel (not too close), coriander, and chamomile.
Soil Preparation
Anise prefers light, well-drained soil. Heavy, waterlogged soils can stunt growth and reduce seed quality.
- Loosen the soil to a depth of 8–10 in (20–25 cm) to encourage the deep taproot.
- Work in compost or well-rotted manure to improve structure and fertility.
- Avoid very rich nitrogen fertilizers; too much nitrogen promotes excess foliage and fewer seeds.
- Aim for soil that drains freely but holds some moisture – think “moist, not soggy.”
How to Sow Anise Seeds Outdoors
Anise develops a strong taproot and does not like to be transplanted, so direct sowing is usually best.
- Prepare rows: Make shallow furrows about 1/4–1/2 in (0.6–1.2 cm) deep and 18–24 in (45–60 cm) apart.
- Sow the seeds: Sprinkle seeds thinly in the row.
- Cover & firm: Lightly cover with fine soil and gently firm down to ensure good seed-to-soil contact.
- Water: Water with a gentle spray to moisten the top layer without washing seeds away.
- Germination: Expect seedlings in about 2–3 weeks in warm soil.
When seedlings are 2–3 in (5–7 cm) tall, thin them to 6–12 in (15–30 cm) apart so each plant has room to develop.
Starting Anise Indoors (Optional)
Because of its taproot, anise does better when sown directly outside, but you can start it indoors if you are careful:
- Use deep biodegradable pots or plugs so you can plant them without disturbing the roots.
- Sow 1–2 seeds per cell about 4–6 weeks before your last expected frost date.
- Keep at 65–70°F (18–21°C) with bright light.
- Transplant outdoors only after frost when seedlings are still small, taking care not to damage the taproot.
Watering & Feeding
Anise appreciates consistent moisture while it is establishing, but it does not like to sit in waterlogged soil.
- Watering: Keep soil evenly moist during germination and early growth. Once established, allow the top inch of soil to dry between waterings.
- Mulch: A light organic mulch helps retain moisture and suppress weeds.
- Feeding: If soil is poor, side-dress lightly with compost during the growing season. Avoid heavy nitrogen feeding.
Plant Care & Maintenance
- Weeding: Keep the area around young plants weed-free so they do not compete for water and nutrients.
- Support: In windy sites, taller anise plants may appreciate a light stake or support to prevent lodging.
- Competing umbels: If you grow for the best seed quality, avoid overcrowding so each plant can develop strong, well-filled seed heads.
Pests & Diseases
Anise is relatively trouble-free, especially in well-drained soil and full sun.
- Insects: Occasional aphids or leaf-chewing insects may appear. Rinse them off with water or use an organic insecticidal soap if needed.
- Disease: Good air circulation and avoiding overhead watering help prevent fungal problems.
- Rotation: Rotate with other crops and avoid planting in the same spot every year to keep soil healthy.
Harvesting Anise Leaves & Seeds
Harvesting Leaves
- You can begin harvesting tender leaves once plants are well established, usually 6–8 weeks after sowing.
- Snip young foliage as needed for fresh use in salads, soups, or garnishes.
- Avoid removing too much at once; leave enough foliage for the plant to continue growing and setting seed.
Harvesting Seeds
- Seed heads (umbels) are ready when they turn from green to a grey-brown color and seeds are firm and aromatic.
- Cut the entire seed head on a dry day and place it upside down in a paper bag or on a clean tray.
- Allow to dry in a warm, airy place for several days until seeds are fully dry.
- Rub or shake the heads to release the seeds, then winnow or blow away any chaff.
- Store dried seeds in an airtight jar in a cool, dark place. Properly dried seeds can keep their flavor for a year or more.
Saving Your Own Anise Seed
To save seed for replanting, simply keep a portion of the dried seed separate from what you use in the kitchen.
- Select healthy, vigorous plants to produce seed.
- Allow seed heads to mature fully on the plant before cutting.
- Dry thoroughly and store in a labeled, airtight container in a cool, dry, dark place.
How to Use Anise in the Kitchen & Garden
- Seeds: Use whole or ground in breads, cookies, pastries, spice blends, sausages, syrups, and liqueurs.
- Tea: Steep crushed seeds in hot water for a naturally sweet, aromatic herbal tea.
- Foliage: Add young leaves to salads, fresh cheese spreads, and garnishes for a mild anise flavor.
- Pollinators: The lacy white flower umbels attract bees, hoverflies, and other beneficial insects.
Tips for Success
- Choose a warm, sunny site and avoid frost exposure.
- Direct sow whenever possible to protect the taproot.
- Keep soil evenly moist during germination and early growth.
- Thin seedlings so plants are not crowded – this improves air flow and seed quality.
- Harvest seeds promptly as they ripen so they are not lost to wind or birds.
Note: Growing conditions can vary by region. Adjust planting dates and care based on your local climate and frost dates.
