Anise is a small annual herb grown for licorice-scented leaves and seed. A successful seed harvest depends on allowing enough season for flowers to develop and ripen. Start with the right plant identity, sow in warm conditions, and protect the ripening heads from rain and seed loss.
Planting at a glance
- Botanical name
- Pimpinella anisum
- Life cycle
- Annual
- Sowing depth
- ¼ inch
- Spacing
- 6–12 inches
- Light
- Full sun
- Seed harvest
- Around 120 days, depending on weather
Use local frost dates and growing conditions to adjust planting and harvest timing.
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Anise, star anise and anise hyssop differ
The packet in this guide is Pimpinella anisum, a member of the carrot family. Star anise is a tree with star-shaped fruits, and anise hyssop is a different flowering perennial. Similar scent does not make those plants interchangeable in the garden.
Anise produces fine upper foliage and small pale flowers in umbrella-like clusters. Its dry fruits are commonly called seeds in the kitchen. Keep your packet and label, especially if growing several herbs with similar-looking seedlings. Never use unidentified volunteer plants as substitutes for a labeled food crop.
Allow enough season for seed
The product's estimate of about 120 days is a planning guide for seed maturity, not a promise for every climate. Count back from the likely end of your useful growing season and allow room for slow weather. Leaves become usable before the seed is ready.
In regions with a long warm season, direct sow after frost danger has passed. Where the season is shorter, start in individual pots and transplant while small, keeping the roots intact. Starting indoors does not eliminate the need for suitable outdoor weather during flowering and ripening.
For tray setup and early seedling care, see our seed-starting guide for beginners.
Sow shallowly and thin promptly
Prepare a fine, weed-free seedbed in full sun. Sow around a quarter inch deep and water gently. Maintain surface moisture until seedlings are established. The packet suggests about ten to fourteen days for germination in favorable conditions, with cooler conditions taking longer.
Thin plants to six to twelve inches apart, giving more room where growth is strong or summers are humid. Crowding makes it hard to distinguish developing flower stems and increases competition for moisture. If using transplants, harden them gradually and plant at their original depth without breaking the young root ball.
Keep growth steady without overfeeding
Choose moderately fertile soil with good drainage. Use compost where needed for soil structure, and base additional amendments on a soil test. Anise does not need to be pushed into lush growth with frequent high-nitrogen feeding.
Check the root zone and water when it begins to dry. New seedlings need more frequent attention than established plants. Direct water at the soil rather than leaving foliage wet every evening. Weed while weeds are small so you do not disturb the crop's roots later. In windy sites, a light support around a small group can help keep seed heads upright.
Choose how much foliage to harvest
Take a few young leaves when plants are established if you want to use them in the kitchen. If your main goal is seed, preserve most of the foliage and let flower stems develop. Constantly cutting off growing tips works against that goal.
A separate plant or short row for leaf use makes the decision easier. Mark the seed-producing plants so they are not accidentally cut back during a kitchen harvest. Once flowers form, watch their transition into developing green seed rather than expecting the entire plant to ripen at once.
Catch ripe seed before it falls
Wait until seed heads begin turning dry and brown. Maturity is indicated by the actual heads, not just the calendar. Cut usable heads into a paper bag or over a tray so loose seed is captured. Work in dry weather when possible.
Finish drying in an airy place protected from rain. Release the dry seed and separate stem pieces and other debris. Store only when thoroughly dry in a labeled airtight container. Keep seed intended for planting separate from kitchen seed and save from healthy plants. Do not put damp harvested heads in a sealed plastic bag, where moisture is trapped.
Containers and a disappointing seed crop
Use a reasonably deep, stable pot with drainage holes if growing on a patio. Thin seedlings rather than filling the container with a dense stand. Pots dry faster than beds, and tall seed stems can make a small container unstable in wind.
If plants grow leaves but do not ripen seed before cold weather, the growing window may have been too short. Try an earlier protected start or use the next planting for leaves. Yellowing in a wet container calls for a drainage check. Aphids on flower stems should be identified and assessed before treatment, particularly while visiting insects are active.
For help choosing a suitable mix, read our guide to soil for container gardening.
Growing questions
Will anise grow star-shaped pods?
No. Pimpinella anisum produces small seed-like fruits in flower heads. Star anise comes from a different woody plant.
Can I grow anise for leaves only?
Yes. Take small harvests from established plants, while recognizing that heavy cutting reduces seed production.
How do I know the seed is ready?
Watch for heads and seeds drying and browning. Collect before they shed, then finish drying under cover.
Ready for another planting? See Anise Seeds for the current packet options.
Sources and photo credits
Prepared with AI assistance using Gardeners Basics product information and horticultural references. This guide does not describe a Gardeners Basics growing trial. Research and license links open in a new tab.
Growing references
Photo credits
Photographs illustrate the crop or growing stage. They are not photographs of a Gardeners Basics growing trial; a specific cultivar is identified only where the source documents it.
- Cover: Pimpinella anisum, Metin GÜLEŞCİ. CC BY 4.0. Resized for display. The Pinterest graphic crops the cover photograph; its photo retains the stated license.
- Article photo 1: Pimpinella anisum, Fedaro. CC BY-SA 4.0. Resized for display. The Pinterest graphic crops the cover photograph; its photo retains the stated license.
