Great Burnet

Sanguisorba officinalis, known as great burnet, is a hardy perennial in the rose family native to cooler regions of the Northern Hemisphere. It produces small, dark reddish-brown flower heads on tall, slender stems, giving borders an airy, naturalistic quality. The serrated leaves are edible with a mild cucumber-like flavour. It thrives in moist yet well-drained soil in full sun to partial shade.

Growing

Sow seeds shallowly at 0.5 cm depth. For indoor sowing, start in trays and place in the refrigerator for several weeks to cold-stratify, then move to room temperature or a shaded outdoor spot to trigger germination. For autumn outdoor sowing, place pots in a sheltered spot exposed to natural winter cold. Germination is variable and can take anywhere from one to eight months depending on stratification. Transplant or thin to 35 cm spacing once seedlings are established.

Care

Keep soil consistently moist but ensure good drainage to prevent root rot. Once established, the plant is largely self-sufficient. In poor soils, apply a balanced slow-release fertiliser in early growth. Deadhead spent flowers to extend the blooming period and prevent excessive self-seeding. Divide clumps every few years to maintain vigour.

Harvest

Harvest young leaves once the plant is well established, picking from the outer edges of the clump. Flowers are ready when the dark red heads are fully formed and firm. Regular picking of leaves and flower stems encourages fresh regrowth throughout the growing period.

In the kitchen

Use fresh young leaves in salads, cold drinks, and herb butters where their cucumber-like freshness is an asset. Flower heads can be used as a garnish. Traditionally, the plant has been used as a medicinal herb — leaves and roots brewed as a tea to support digestion.

Storing

Fresh leaves keep refrigerated in a damp cloth or sealed bag for 3–5 days. Dried leaves retain flavour for up to one year when stored in an airtight container away from light and heat. Roots can be dried and stored similarly.