Valerian or Valerian Root is a common Medicinal Herb used in Treatment of Insomnia, Blood Pressure and Anxiety.

Valeriana officinalis

Valerian, since the time of ancient Rome and Greece, has been used as a medicinal herb. In ancient Greek times the remedy was known as phu. Hippocrates described its properties as a remedy for insomnia.
By medieval times Valerian had become known as "all heal," and was used for its effect on the nervous system.
Recent research has indicated a beneficial effect on the heart and the ability of Valerian to lower high blood pressure.
The most common use of Valerian today is in commercially prepared Herbal Supplements to be taken as a sleep aid.

USDA Growing Zone for Valerian:

USDA Plant Maturity Zones: Planting Zones 4 to 9
Sunset Western Garden Zones: Planting Zones 1 to 24

Plant Type; Valerian plant identification and identifying valerian:

The herb Valerian is a flowering hardy perennial which blooms from June to September.
Valerian can grow to be 5 ft (1.5m) tall and almost as wide. It produces heads of sweet-smelling white or pink flowers which grow on tall and hollow, straight stems rising above the foliage. The light green leaves, each with eight to ten pairs of jagged-edged, narrow leaflets, stay close to the ground.
Valerian grows wild in damp meadows and ditches or near streams and creeks.
Valerian can become invasive in the garden if not controlled.

Best Soil Type for growing valerian:

Garden Valerian grows best in full sun and rich, moist soil.

Propagating Valerian:

Grow Valerian from seed in the spring.
Propagate Valerian by Root division in the fall.

Harvesting valerian:

There is no practical method by which Valerian can be harvested by the average herb gardener.

Drying and storage of valerian:

Should not be attempted.

Using valerian as a Culinary Herb:

There is no culinary use of the herb Valerian. Some make a valerian tea or valerian root tea.

Medicinal Uses of valerian:

You are best advised to consult a professional for guidance in the use of Valerian as a medicinal herb. This is especially important if your condition is chronic or long-term.

Commercial capsules of Valerian can be taken for insomnia, depression, and minor nervous disorders like anxiety. Research has shown a beneficial effect on the heart and blood pressure. Valerian is also said to help stress-related conditions of the bowel, such as irritable bowel syndrome or spastic colon.
Valerian may also be added to bath water to help relieve nervousness and to induce sleep. Valerian can also be boiled and the steam can be inhaled to produce the same effect.
Valerian is found most often in medicines provided to help with insomnia; while doing so it also has provided some interesting dreams. The herb to take for a good night's sleep and memorable dreams is Valerian.