Self-Heal

Prunella vulgaris, commonly known as self-heal or heal-all, is a low-growing herbaceous perennial in the mint family (Lamiaceae). It produces dense, upright spikes of violet-purple flowers beloved by bees and other pollinators. The plant spreads readily by seed and forms compact mats of oval leaves. It is highly adaptable, thriving in lawns, meadows, borders, and containers with minimal intervention.

Growing

Surface-sow seeds onto moist, firm compost or directly into prepared ground once soil reaches 10 °C; press seeds lightly into contact with the surface and cover with no more than 3 mm of fine compost or soil. Space plants or thin seedlings to 25 cm apart. Seeds germinate in 14–30 days under adequate moisture and light. For earlier establishment, sow indoors at 10–15 °C, transplant once plants have formed several true leaves and nights remain above 5 °C.

Care

Keep soil evenly moist during establishment; once plants are established, self-heal is drought-tolerant. No feeding is required in reasonably fertile soil. Deadhead spent flower spikes to extend the flowering period and limit self-seeding if naturalising is not desired. Cut back hard after the main flush of flowering to encourage a second flush and tidy growth. No staking needed.

Harvest

Harvest aerial parts — leaves, stems, and flower spikes — when at least one-third of florets on a spike are open. Cut stems to within a few centimetres of the base using clean scissors. The plant will regrow and can be harvested repeatedly through the growing period. For medicinal and culinary use, pick in the morning after dew has dried. Harvest window extends for approximately 60 days through the active flowering period.

In the kitchen

Use fresh young leaves raw in salads or as a pot herb added to soups and stews. The edible flowers make a decorative garnish for both savoury and sweet dishes. Dried aerial parts are widely used to prepare herbal teas and infusions; steep for 10 minutes in near-boiling water. The herb has a mild, slightly bitter flavour that pairs well with other meadow herbs.

Storing

Dry harvested stems and leaves at 30–40 °C or in a well-ventilated space out of direct light until completely crisp, then crumble and store in sealed airtight containers away from heat and light for up to 12 months. Fresh leaves keep in a damp cloth in the refrigerator for 3–5 days. Dried flowers retain colour and potency best when stored in dark glass jars.