HerbLensGo Plus
← Plant library
Plant photo

Photo: Johann Georg Sturm (Painter: Jacob Sturm), Public domain (via Wikimedia Commons)

Marsh Valerian

Valeriana dioica

Also known as Small Valerian, Marsh All-Heal

At a glance
Family
Caprifoliaceae (formerly placed in Valerianaceae)
Type
Herbaceous perennial wildflower
Parts used
Root and rhizome
Size
6 to 16 inches tall (15 to 40 cm)
Bloom
Late spring to early summer, small pale pink to white flower clusters
Habitat
Damp meadows, fens, marsh edges, and wet woodland clearings across Europe and western Asia
Acquisition
Grow or buy

Key benefits

Traditionally calming
Eases nervous tension
Supports restful sleep
Gentle nighttime companion

Traditional uses

Marsh valerian is the smaller, damp-loving cousin of the garden valerian most people know, and old European herbals mention it as a milder substitute when the true valerian root was scarce or out of season. Country herbalists dug its slender roots from wet meadows and fen margins, drying them for the same purpose their neighbors used common valerian: quieting a restless mind before sleep. Because the plant is dioecious, meaning individual plants carry either male or female flowers but never both, foragers had to know a patch well to find one bearing the seed-set roots worth digging. Its use never rivaled Valeriana officinalis in the wider herbal trade, but in the wet corners of the countryside where it grew, it earned a quiet, steady reputation as a household calming root.

How to grow & use it

🔒

The full apothecary for Marsh Valerian

Traditional remedies and step-by-step preparations, a complete growing guide, and how to harvest, dry, and store it, all unlocked with HerbLens Unlimited.

  • Remedies & preparations
  • Growing guide
  • Harvest & storage
Unlock every plant

From under $6 a month. Free plant identifications always included.

Pairs well with
  • Chamomile
  • Lemon balm
  • Hops
Substitutes
  • Valeriana officinalis (common valerian)
  • Hops
Choose it when

When the damp, quiet corners of the meadow seem to hum with stillness, and you want that same hush before sleep.

Did you know?

The species name dioica means two houses, a nod to the fact that marsh valerian plants come in separate male and female forms rather than bearing both on one plant, a trait shared by only a handful of its valerian relatives.

Safety

Marsh valerian can cause drowsiness, so avoid combining it with alcohol, sedatives, or other calming medications, and don't drive after taking it. It's best stopped a couple of weeks before surgery, since it may add to anesthesia's effects.