Valerian root harvested in autumn from an established plant is one of the most medicinally concentrated materials you can bring into the home apothecary. The plant has spent the growing season building its root reserves, and by October, when the above-ground growth is yellowing and dying back, everything the plant accumulated through the year is concentrated in the root mass below ground.
The smell when you dig it is unmistakable: intensely earthy, rich, slightly unpleasant in the way that many of the most potent plant medicines are, as if the root does not particularly want to be polite about what it contains. Cats, notoriously, find it irresistible. The smell intensifies as the root dries, which is why dried valerian preparations have such a distinctive character.
How to Harvest
Dig the whole root clump from an established plant (second or third year plants are ideal, first-year roots are functional but smaller). The root system is fibrous and spreads laterally, so use a garden fork rather than a spade to avoid cutting the roots. Lift the whole clump, shake off excess soil, and wash well. Work quickly: the volatile valerenic acid compounds that contribute to the nervine action begin to degrade from the moment the root is cut, which is why fresh root preparations are consistently considered superior to dried root preparations.
Making Fresh Root Tincture
Chop the cleaned root as finely as you can manage (a food processor works well for a large harvest, or a sharp knife and patience for smaller amounts). Pack the chopped root tightly into a clean glass jar. Cover completely with vodka or grain spirit at 40 to 50 percent (ensuring all root material is submerged). Cap tightly. Label with the plant name, part, harvest date, and menstruum. Leave for six to eight weeks in a cool, dark place, shaking every day or two. The resulting tincture will have a deeply earthy, characteristic smell and a warm amber color. Strain through cheesecloth, press firmly, and bottle in labeled dark glass.
Drying Valerian
Dried valerian root is functional but inferior to fresh root tincture for most applications. If you want to dry some for tea or for future dried-herb preparations, chop the root into small pieces and dry at 40 to 45 degrees in a dehydrator until completely dry and snapping clean. Store in an airtight container. The smell intensifies dramatically during drying (plan accordingly) and then mellows slightly in storage. The Herbalist Codex app has the full valerian profile alongside this preparation guidance.