Pokeweed, American pokeweed, Garnet, Pigeon Berry, Poke

Phytolacca americana

Physical Characteristics

Phytolacca americana is a PERENNIAL growing to 2 m (6ft) by 1.5 m (5ft) at a fast rate. See above for USDA hardiness. It is hardy to UK zone 4 and is not frost tender. It is in flower from August to September, and the seeds ripen from September to November. The species is hermaphrodite (has both male and female organs). Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

Distribution

Northern and Central N. America. Occasionally naturalized in Britain[17].

Habitats

Woodland Garden Sunny Edge; Dappled Shade; Cultivated Beds;

Edible Uses

Edible Parts: Fruit Leaves Shoots Edible Uses: Colouring Leaves - they must be cooked and even then it is best to change the water once[1, 2, 4, 33, 95]. They are used like spinach[183]. Only the young leaves should be used since they become toxic with age[102]. Caution is advised, see the notes above on toxicity. Young shoots - cooked[20, 33, 62, 102]. An asparagus substitute[183], they are delicious[159]. The shoots are sometimes blanched before using, or forced in cellars to provide an early crop[183]. The tender clear inner portion of the stem can be rolled in cornmeal and fried[183]. Although cultivated on a small scale in N. America for its shoots, caution is advised, see notes above. A nutritional analysis is available[218]. Fruit - cooked and used in pies[159, 213]. Poisonous raw, causing vomiting and diarrhoea. Even the cooked fruits should be viewed with caution. The fruit is a berry about 12mm in diameter[200]. A red dye is obtained from the fruit and used as a food colouring[183].

Medicinal Uses

Alterative Anodyne Antiinflammatory Antirheumatic Antiviral Cancer Cathartic Dysentery Expectorant Homeopathy Hypnotic Narcotic Purgative Pokeweed has a long history of medicinal use, being employed traditionally in the treatment of diseases related to a compromised immune system. The plant has an interesting chemistry and it is currently (1995) being investigated as a potential anti-AIDS drug[238]. It contains potent anti-inflammatory agents, antiviral proteins and substances that affect cell division[238]. These compounds are toxic to many disease-causing organisms, including the water snails that cause schistosomiasis[238]. All parts of the plant are toxic, an excess causing diarrhoea and vomiting[238]. This remedy should be used with caution and preferably under the supervision of a qualified practitioner. It should not be prescribed for pregnant women[238]. The root is alterative, anodyne, anti-inflammatory, cathartic, expectorant, hypnotic, narcotic and purgative[4, 21, 46, 61, 165, 192, 238]. The dried root is used as an anodyne and anti-inflammatory[213]. The root is taken internally in the treatment of auto-immune diseases (especially rheumatoid arthritis), tonsillitis, mumps, glandular fever and other complaints involving swollen glands, chronic catarrh, bronchitis etc[238]. The fresh root is used as a poultice on bruises, rheumatic pains etc, whilst a wash made from the roots is applied to swellings and sprains[222]. The root is best harvested in the autumn and can be dried for later use[238]. The fruit has a similar but milder action to the roots[238].The juice is used in the treatment of cancer, haemorrhoids and tremors[213]. A poultice made from the fruit is applied to sore breasts[222]. A tea made from the fruit is used in the treatment of rheumatism, dysentery etc[222]. The plant has an unusually high potassium content and the ashes, which contain over 45% caustic potash, have been used as a salve for ulcers and cancerous growths[232]. The leaves are cathartic, emetic and expectorant[222]. A homeopathic remedy is made from the fresh root[232]. Its main action is on the throat, breast, muscular tissues and the joints[232].

Known Hazards

The leaves are poisonous[21, 62, 76, 95]. They are said to be safe to eat when young, the toxins developing as the plants grow older. Another report says that the seeds and root are poisonous. The plant sap can cause dermatitis in sensitive people[222]. The plant contains substances that cause cell division and can damage chromosomes. These substances can be absorbed through any abrasions in the skin, potentially causing serious blood aberratins, and so it is strongly recommended that the people wear gloves when handling the plant[222, 274]. Avoid during pregnancy. Even children consume even 1 berry emergency poison treatment should be instituted. Up to 10 berries are considered harmless for adults [301].