Wormwood, Tilesius' wormwood
Artemisia tilesii

Family: Asteraceae or Compositae

What it is like

Artemisia tilesii is a PERENNIAL growing to 1.5 m (5ft). The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers dry or moist soil and can tolerate drought.

Height (m): 1.5

Where it is found

Open rocky or gravelly wet or dry sites, mostly at rather high elevations in the mountains, but descending at times to sea level, N. Montana to Alaska.

E. Asia to North-western N. America.

Conservation Status:

Countries/locations it is found in

How it is used

Food

Rating: 1

The leaves are used for flavouring rice dumplings. The raw shoots are peeled and eaten, usually with oil.

Condiment: the various plants that are used as flavourings, either as herbs, spices or condiments.

Medicine

Rating: 2

The plant is antirheumatic, antitumor, disinfectant, febrifuge, haemostatic, laxative and tonic. It is used in the treatment of cancer and to prevent infections in wounds etc. An infusion of the leaves and flowering tops is used as a laxative and to treat stomach aches. An infusion is used internally to treat rheumatism and is also applied externally to swollen joints. A poultice of the leaves is applied to skin infections and to cuts to stop the bleeding. A decoction is used as an eyewash. The plant has properties similar to codeine. The report does not specify which part of the plant is used. Codeine is used as a painkiller.

Analgesic: Relieves pain.

Antirheumatic: Treats rheumatism.

Antitumor: Preventing, or effective against, tumors, it is used in the treatment of cancer. Probably synonymous with Cytotoxic.

Disinfectant: Used for cleaning wounds.

Haemostatic: Controls internal bleeding.

Laxative: Stimulates bowel movements in a fairly gentle manner.

Poultice: A moist, usually warm or hot, mass of plant material applied to the skin in the treatment of burns etc.

Skin: Plants used in miscellaneous treatments for the skin.

Stomachic: Aids and improves the action of the stomach.

Tonic: Improves general health. Slower acting than a stimulant, it brings steady improvement.

Other

Rating:

The freshly crushed leaves can be rubbed on the hands to remove odours. The plant is used as an incense and deodorant in the home.

Disinfectant: Plants used for disinfecting.

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

How it is grown

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 this country. The following notes are based on the general needs of the genus. Easily grown in a well-drained circumneutral or slightly alkaline loamy soil, preferring a warm sunny dry position. Established plants are drought tolerant. Plants are longer lived, more hardy and more aromatic when they are grown in a poor dry soil. Members of this genus are rarely if ever troubled by browsing deer.

Propagating it: Seed - surface sow from late winter to early summer in a greenhouse, making sure that the compost does not dry out. When large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter. Plant out in late spring or early summer. Division in spring or autumn. Basal cuttings in late spring. Harvest the young shoots when about10 - 15cm long, pot up in a lightly shaded position in a greenhouse or cold frame and plant them out when well rooted. Very easy.

Best place to grow: Cultivated Beds;

Habit: Perennial

Hardiness: 0-0

Growth:

Soil: Light (sandy), medium

Shade: Semi-shade, no shade

Moisture: Dry, moist

Things to keep in mind

Although no reports of toxicity have been seen for this species, skin contact with some members of this genus can cause dermatitis or other allergic reactions in some people.

Its other names

Local names

Synonyms

A. unalaskensis. Rydb.