Myrrhis odorata (Sweet Cicely)
Myrrhis odorata (Sweet Cicely)
Contents
Introduction & History
Sweet Cicely is a graceful, fern-leaved perennial with a gentle anise flavour that was once one of Europe's most beloved potherbs. Largely forgotten in modern cooking, it deserves rediscovery for its ability to naturally sweeten tart fruits, its beautiful lacy foliage, and its willingness to thrive in shady, cool corners of the garden where few herbs venture.
History & Origin
Native to the mountains of central and southern Europe, from the Pyrenees to the Caucasus. Widely cultivated in medieval European monastery gardens for both culinary and medicinal use. The root was eaten as a vegetable, leaves used to sweeten stewed fruit, and seeds nibbled as a digestive. The plant naturalised throughout Britain and Scandinavia, where it thrives in cool, moist conditions.
Botanical Description
Large herbaceous perennial growing 60–120 cm tall with a spreading habit. Leaves are large, tripinnate, fern-like, soft green with occasional white blotching — resembling a refined cow parsley. Stems are hollow and furrowed. Flat umbels of tiny white flowers appear in late spring. Large, distinctive seeds (2–2.5 cm) are ridged, black when ripe, and have a strong anise flavour.
Stem: Hollow, often grooved • Leaves: Alternate, compound (pinnate or palmate) • Inflorescence: Compound umbel • Height: 90 cm at maturity • Spread: 60 cm • Foliage: bright green • Flowers: white (spring)
Planting & Cultivation
Seeds require prolonged cold stratification (3–4 months at 0–5°C) to germinate. Sow fresh seed outdoors in autumn for spring germination, or stratify in damp sand in the refrigerator before spring sowing. Plant 60–90 cm apart — these are large perennials. Alternatively, buy potted plants or obtain root divisions from established clumps. Patience is essential; germination is slow and often erratic.
| Sun exposure | Partial Shade |
| Soil pH | 6.0-7.0 |
| Spacing | 60 cm |
| Seed depth | 3–6 mm (surface-sow if light-dependent germinator) |
| Water needs | Moderate |
| Soil type | Well-drained, humus-rich loam; add perlite or grit for drainage |
Cultivation Details
Sweet Cicely excels in partial to full shade with moist, humus-rich soil — conditions that most herbs dislike. It is one of the few culinary herbs for woodland gardens and north-facing borders. Mulch annually with compost. Remove spent flower heads to prevent excessive self-seeding (it can be invasive in ideal conditions). The deep taproot makes established plants difficult to move.
Climate & Hardiness
Extremely cold-hardy perennial, surviving to −30°C (USDA zones 3–7). Dislikes hot, dry summers — in zones 8+ it struggles and often goes dormant early. Ideal in cool, mountainous, or maritime climates. Native to alpine meadows and woodland margins where summers are mild and moist.
USDA zones: 3-7
Minimum temperature: -35°C
Seasonal Care
Spring: fresh foliage emerges early — one of the first herbs available. Harvest young leaves. Late spring: flowers appear; deadhead to prevent self-seeding. Summer: foliage may yellow in hot weather; cut back and water deeply for a flush of fresh growth. Autumn: collect ripe seeds if desired; mulch crown. Winter: fully dormant; survives severe cold without protection.
Propagation
By seed (requires 3–4 months cold stratification), root division in early spring or autumn, or root cuttings. Fresh seed sown in autumn outdoors is the easiest approach. Division of established clumps is reliable but the deep taproot makes it labor-intensive. Self-sows freely in cool, moist gardens — thin unwanted seedlings.
| Method | Success rate | Time | Notes |
|---|---|---|---|
| Stem cuttings | 70–90% | 2—4 weeks | Softwood in spring, semi-ripe in summer; 8–12 cm |
| Division | 95%+ | Immediate | Split established clumps in spring or autumn |
| Seed | 50–80% | 14–28 days | Some require cold stratification; germination variable |
| Layering | 80–90% | 6–12 weeks | Pin low branch to soil; sever when rooted |
Diseases & Pests
Remarkably pest- and disease-free. Occasionally aphids on flower heads. Slugs may damage young spring growth. Powdery mildew in dry summers is possible — water at ground level. The strong anise scent deters most herbivorous insects. No significant disease problems in cool climates.
Culinary Uses
Leaves added to stewed fruits (rhubarb, gooseberries, plums) naturally reduce sourness, allowing less sugar. Young leaves brighten salads with gentle anise notes. Green seeds are nibbled as a digestive or added to fruit dishes. The root is peeled and eaten boiled or raw — it has a sweet, nutty, anise-like flavour. In Scandinavian cuisine, leaves flavour omelettes and cream soups.
| Category | Pairing suggestions |
|---|---|
| Poultry | Chicken, turkey, duck |
| Fish | White fish, salmon, prawns |
| Vegetables | Tomatoes, courgettes, aubergine |
| Dairy | Soft cheeses, butter, cream sauces |
Medicinal & Aromatherapy
Traditionally used as a digestive tonic, expectorant, and blood purifier in European herbal medicine. The root was decocted for coughs and flatulence. Contains anethole (the compound responsible for the anise flavour), which has mild carminative and expectorant properties. Considered a gentle herb suitable for elderly patients in medieval herbalism.
| Compound | Properties |
|---|---|
| myrcene | herbaceous, earthy |
| linalool | floral |
| geraniol | rose-like |
| citral | lemony |
| apigenin | mild sedative flavonoid |
Container & Companion Growing
Container Growing
Challenging in containers due to the large taproot and the plant's size (120 cm). Possible in very large pots (40+ litres) in cool, shaded positions. Not practical for balconies or windowsills. Better suited to garden cultivation. If container-growing, use deep containers with moisture-retentive compost and never let it dry out.
• Minimum pot size: 20–25 cm Ø, 5 L+
• Shallow roots; frequent watering needed
• Use free-draining potting compost with 20–30% perlite or grit
• Ensure drainage holes; stand on pot feet to prevent waterlogging
• Feed with dilute liquid fertiliser (half-strength) every 2–3 weeks in growing season
Companion Planting
Excellent under-storey herb beneath fruit trees and in forest garden systems. Good companion for rhubarb and gooseberries — use the leaves to sweeten these tart fruits naturally, reducing sugar needed. Tolerates competition from tree roots. Provides early-season nectar for beneficial insects.
| ✓ Good companions | Tomatoes, Peppers, Strawberries, Carrots |
| ✗ Avoid planting with | Fennel, Rue |
Common Mistakes to Avoid
Planting in full sun and dry soil — Sweet Cicely is a shade-lover that needs moisture. Not stratifying seeds and wondering why nothing germinates. Allowing it to self-seed unchecked, leading to a Sweet Cicely invasion. Expecting instant results — it takes 2–3 years to reach full size.
Harvesting & Preservation
Harvest young leaves in spring for the most delicate flavour. Leaves can be picked throughout the growing season but become coarser with age. Green seeds are harvested when soft and used fresh — they harden and lose culinary appeal when fully ripe. The root can be lifted in autumn and used as a vegetable. Leaves don't dry or freeze well; use fresh. Seeds can be dried for anise flavouring.
• Time of day: Early morning, after dew has evaporated but before intense midday heat volatilises essential oils
• Growth stage: Just before flowering, when essential oil concentration peaks. Once flowers open, the plant redirects energy from leaf production
• Season: Spring-Summer
• Part harvested: Leaves, Seeds, Roots
• Harvest rule: Never remove more than ⅓ of the plant at once; this ensures continued vigorous regrowth
• Technique: Cut stems cleanly above a leaf node with sharp scissors or secateurs. Tearing damages tissue and invites disease
| Method | Process | Shelf life | Best for |
|---|---|---|---|
| Air drying | Tie bundles, hang upside down in warm, dark, airy space | 6–12 months | Most herbs |
| Oven / dehydrator | Spread on trays, 35–45°C until crisp | 6–12 months | Fleshy-leaved herbs |
| Freezing (whole) | Blanch 5s, ice bath, pat dry, freeze flat on tray | 6 months | Basil, chives, parsley |
| Freezing (oil cubes) | Chop fine, pack into ice cube tray, cover with olive oil | 6 months | Any culinary herb |
| Herb salt | Layer herb and coarse salt 1:4, dry and grind | 12+ months | Rosemary, thyme, sage |
| Infused vinegar | Pack jar, cover with warm vinegar, steep 2–4 weeks | 6 months | Tarragon, dill, basil |
| Infused oil | Fill jar with dried herb, cover with oil, steep 4–6 weeks | 3–6 months | Rosemary, thyme, chilli |
Frequently Asked Questions
Why won't my Sweet Cicely seeds germinate?
They require 3–4 months of cold stratification. Sow fresh seed outdoors in autumn, or refrigerate seeds in damp sand for the winter before spring sowing. Even then, germination is slow and erratic.
Is Sweet Cicely invasive?
It self-sows freely in cool, moist conditions and can spread aggressively. Deadhead spent flowers before seeds ripen to control spread, or pull unwanted seedlings.
Can I eat the root?
Yes — the thick taproot is edible, with a sweet, nutty, anise-like flavour. Peel and boil like parsnip, or grate raw into salads. It was commonly eaten as a root vegetable in medieval Europe.
Seasonal Care Calendar
🌱 Spring (Mar–May)
Water: Moderate
Feeding: Regular feeding
☀️ Summer (Jun–Aug)
Water: Heavy
Feeding: Regular feeding
🍂 Autumn (Sep–Nov)
Water: Moderate
Feeding: No feeding
❄️ Winter (Dec–Feb)
Water: Light
Feeding: No feeding
A graceful, shade-loving perennial with fern-like foliage and a gentle anise flavour. Thrives in cool, moist conditions (zones 3–7) where most herbs fail. Naturally sweetens tart fruits, reducing sugar in cooking. Requires cold stratification for germination. A forgotten gem of the medieval herb garden.
Quick Reference: Myrrhis odorata
Key Principles: Right location, well-drained soil, regular harvesting to promote growth, and appropriate winter protection for tender species.