Valerian

Valerian is a hardy herbaceous perennial native to Europe and southwestern Asia, growing 40–100 cm tall with clusters of pale pinkish-white flowers. The root is the primary medicinal part, prized for its well-documented calming properties. It thrives in nutrient-rich, moisture-retentive soil in full sun to partial shade and is remarkably adaptable to less ideal conditions. Leaves are also useful as a compost activator, stimulating both microbial and earthworm activity.

Growing

Sow seeds shallowly at 0.2 cm depth once soil reaches around 10 °C. Seeds germinate in 10–15 days. Press seeds lightly onto the surface as they need light to germinate well. Thin or transplant seedlings to 40 cm apart, with rows 50–60 cm apart. Alternatively, divide the root in spring or autumn and plant at the same spacing. Plants establish in the first year and roots are ready to harvest in the second year.

Care

Water regularly during dry spells to keep soil evenly moist, as valerian prefers moisture-retentive conditions. Feed with a balanced organic fertiliser once in spring to support vigorous growth. Deadhead flower stalks if self-seeding is not desired. Cut back spent stems after flowering to encourage the plant's energy into root development. In established clumps, divide every 3–4 years to maintain vigour.

Harvest

Harvest roots in late autumn of the second year once the plant has died back. Dig carefully around the plant with a fork to lift the entire root system without breaking. Roots are mature when they emit their characteristic earthy, musky scent. Young leaves can be harvested sparingly throughout the growing period for use in soups or composting.

In the kitchen

The root is the primary culinary and medicinal part — slice and dry for herbal teas and tinctures known for their calming effect. Young leaves can be added to soups and stews for mild flavour. Roots can also be incorporated into hearty broths. Valerian root is most commonly used as a sleep-supporting herbal infusion.

Storing

Dry sliced roots at 35–40 °C in a food dehydrator or well-ventilated warm space until completely dry. Store dried roots in airtight glass jars away from light and moisture for up to 12 months. Fresh roots can be kept in a cool, dark cellar for several weeks. Do not refrigerate fresh roots for long periods, as moisture promotes mould.