Valeriana sitchensis - American Valerian

Family:	Valerianaceae
Habit:	Perennial
Height:	1.2
Synonyms:
Range:	Western N. America - Alaska to California.

Valeriana sitchensis (American Valerian) is a Perennial which grows to a height of 1.2m . It has a hardness rating of 0.
The flowers from this plant are dioecious (each plant is either male or female, thus both genders need to be present to seed) and they are pollinated by Insects

Soil Information

American Valerian will grow in light (sandy),medium (loamy),hard (clay) soil. It is not necessary for the soil to be well drained.
The soil prefers the following PH / acid levels :
- pH of less than 6, Acidic soils
- pH between 6 and 8, Neutral soils
- pH greater than 8, Basic soils
American Valerian prefers moist soils

Ideal Planting Locations

American Valerian should not be planted in shady areas.

Moist open or wooded places at mid or upper elevations in the mountains, often in wet meadows[60].

Planting places suited to this plant described below.

• Grows within a woodland garden
• Grows on a sunny edge
• Works within dappled Shade

Cultivation Details

We have very little information on this species and do not know if it will be hardy in Britain, though judging by its native range it should succeed outdoors in many parts of the country. The following notes are based on the general needs of the genus. Succeeds in ordinary garden soil[1]. Dioecious, male and female plants must be grown if seed is required.

Edible Uses*

* See disclaimer
Edible Rating: 1/5
Root - cooked. A strong flavour, it needs to be steamed for 24 hours[172]. Seed - parched[172].

• Root - includes bulbs, corms, tubers, rhizomes etc.
• Seed - includes nuts, cereals, peas and beans.

Medicinal Uses*

* See disclaimer
Medicinal Rating: 3/5
Valerian is a well-known and frequently used medicinal herb that has a long and proven history of efficacy. It is noted especially for its effect as a tranquilliser and nervine, particularly for those people suffering from nervous overstrain[4, 222]. Valerian has been shown to encourage sleep, improve sleep quality and reduce blood pressure[254]. It is also used internally in the treatment of painful menstruation, cramps, hypertension, irritable bowel syndrome etc[238, 254]. It should not be prescribed for patients with liver problems[238]. Externally, it is used to treat eczema, ulcers and minor injuries[238]. The root is antispasmodic, carminative, diuretic, hypnotic, powerfully nervine, sedative and stimulant[4, 7, 9, 14, 21, 46, 147, 165, 192, 218]. The active ingredients are called valepotriates, research has confirmed that these have a calming effect on agitated people, but are also a stimulant in cases of fatigue[222]. The roots of 2 year old plants are harvested in the autumn once the leaves have died down and are used fresh or dried[4, 9, 238]. The fresh root is about 3 times as effective as roots dried at 40° (the report does not specify if this is centigrade or fahrenheit), whilst temperatures above 82° destroy the active principle in the root[240]. Use with caution[21, 238], see the notes above on toxicity.

• Antispasmodic - Relaxes muscular spasms and cramps, calming nervous irritation.
• Carminative - Reduces flatulence and expels gas from the intestines.
• Diuretic - Acts on the kidneys, promoting the flow of urine.
• Hypnotic - Induces sleep.
• Nervine - Stimulates and calms the nerves.
• Sedative - Gently calms, reducing nervousness, distress and irritation.
• Stimulant - Excites or quickens activity of the physiological processes. Faster acting than a tonic but differing from a narcotic in that it does not give a false sense of well-being.

Propagation

Seed - sow spring in a cold frame and only just cover the seed because it requires light for germination[200]. Prick out the seedlings into individual pots when they are large enough to handle and plant out into their permanent positions in the summer if sufficient growth has been made. If the plants are too small to plant out, grow them on in the greenhouse or frame for their first winter and plant them out early in the following summer. Division in spring. Larger divisions can be planted out direct into their permanent positions. We have found that it is best to pot up smaller divisions and grow them on in light shade in a greenhouse or cold frame until they are growing away well. Plant them out in the summer or the following spring.

Known Hazards

Some caution is advised with the use of this plant. At least one member of the genus is considered to be poisonous raw[161] and V. officinalis is a powerful nervine and sedative that can become habit-forming.

Other Uses

The dried root has been used as an incense[257].

• Incense - Aromatic plants that can be burnt to impart a pleasant smell, repel insects and disinfect closed areas.

Cultivars

no recorded cultivars

References

Vascular Plants of the Pacific Northwest.
Hitchcock. C. L.
Author: Hitchcock. C. L.
Rating:
Publisher : A standard flora for Western N. America with lots of information on habitat etc. Five large volumes, it is not for the casual reader.
Date of Publication : 1955

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