Sweet Cicely (Myrrhis odorata) is a large, ferny herbaceous perennial native to mountainous Europe. Every part — leaves, stems, seeds, and roots — carries a strong anise scent and is edible. It is among the first perennials to push up in spring and holds its fresh appearance well into fall, making it a valuable plant in shaded areas that would otherwise sit empty.
It performs best in cool, moist, shaded conditions: a woodland edge, a north-facing border, or dappled shade under deciduous trees. Plants develop a deep taproot quickly, so direct sow in fall or set out young transplants; established plants resent disturbance. Sweet Cicely self-seeds freely — remove immature seed heads to limit spread. A neutral to slightly alkaline pH suits it well, and a layer of organic mulch helps sustain the consistent moisture it needs through summer heat.
Leaves are used in cooking to offset the tartness of acidic fruits such as rhubarb and gooseberries, reducing the sugar required. Seeds carry a stronger anise flavor and are used as a spice. Roots can be eaten raw or cooked. Traditionally, the plant was used as a general digestive tonic for flatulence and indigestion, and as a mild expectorant for coughs and bronchitis.
Powdery mildew
White or grey powdery coating on leaves — usually starting on older growth in humid conditions or when nights cool.
Improve air circulation by thinning plants. Apply neem oil or potassium bicarbonate spray at first sign. Avoid overhead watering.
Root rot
Plants wilt, yellow, and stunt even in moist soil; lower stems and roots turn brown, soft, and mushy and the plant may collapse. Most common in heavy, wet, or poorly drained ground.
Improve drainage and stop overwatering, and never plant too deep. Lift and destroy badly affected plants along with the soil around the roots. Grow in raised or free-draining beds to prevent it returning.
Botrytis (grey mould)
Grey fuzzy mould on petals and stems, worst in cool wet conditions.
Remove affected parts immediately. Improve air circulation. Avoid overhead watering. Apply copper fungicide if severe.
Fungal leaf spot
Brown or purplish spots on the leaves, often ringed with a yellow halo, that spread and merge in warm, humid, or wet weather; heavily spotted leaves yellow and drop early.
Pick off spotted leaves and clear fallen debris to remove overwintering spores. Improve air circulation by thinning, and water at the base so foliage dries quickly. If it persists, apply a copper- or sulfur-based fungicide at the first sign.