Juniperus communis
Juniperus communis
Safety & Hazards
The essential oil in this plant contains thujone[ 293 Title Poisonous Plants of North Carolina Publication Author Website http://www.ces.ncsu.edu/depts/hort/consumer/poison/poison.htm Publisher Year 0 ISBN Description An excellent concise but comprehensive guide to toxic plants that grow in N. Carolina. It lists even those plants that are of very low toxicity, including several well-known food plants such as carrots and potatoes. ]. Thujone is a GABA receptor antagonist which allows neurons to fire more easily. In larger doses this can cause muscle spasms and convulsions, and can also be toxic to brain, kidney, and liver cells. There has been a lot of negative press regarding thujone, particularly in the mid 19th century when thujone was reported to be more dangerous than alcohol - since shown to be exaggerated; and reports in the 1970’s that it might have a similar effect on the brain to THC (found in cannabis) – since found to be incorrect. Thujone is probably best known for its use in the alcoholic drink ‘Absinthe’. It is also found in the essential oils of many other plants that are used in herbal medicines and foods, including Arborvitae (Thuja species), some Junipers (Juniperus species), Wormwoods (especially Artemisia absinthium) and Sage (Salvia officinalis). There are some legal restrictions in various countries on the quantity of thujone that can be added to foods and drinks and these vary between countries. Side effects from consuming thujone can include sleeplessness and anxiety but, unless the pure essential oil is used, the quantity of thujone found in plants is well within safety levels. Pregnant women, however, may be advised to restrict their use of thujone-containing plants. Juniper should not be used internally in any quantities by pregnant women[ 65 Title A Colour Atlas of Poisonous Plants. Publication Author Frohne. D. and Pfänder. J. Publisher Wolfe Year 1984 ISBN 0723408394 Description Brilliant. Goes into technical details but in a very readable way. The best work on the subject that I've come across so far. , 165 Title The Dictionary of Modern Herbalism. Publication Author Mills. S. Y. Publisher Year ISBN Description An excellent small herbal. ].
Botanical Description
Juniperus communis is a very variable, evergreen shrub or a tree with an erect stem; it can grow up to 12 metres tall, though it is more commonly within the range 1 - 3 metres. The branches can be erect or spreading, so crown shape is very variable[ 74 Title Flora of the USSR. Publication Author Komarov. V. L. Website http://www.biodiversitylibrary.org Publisher Israel Program for Scientific Translation Year 1968 ISBN - Description An immense (25 or more large volumes) and not yet completed translation of the Russian flora. Full of information on plant uses and habitats but heavy going for casual readers. It can be downloaded from the Internet. ]. The plant has a long history of traditional uses as a food flavouring, medicine and source of materials, and is still often used as a flavouring (especially in gin) and medicine. It is a commonly used medicinal herb in India, where it is gathered in large quantities from the wild for local use and for trade[ 2020 Title Trade in Indian Medicinal Plants Publication Ethnobotany of India Vol 5., 321-345, 2018 Author D.K.Ved, S.Noorunnisa Begum, & K.Ravi Kumar Publisher Apple Academic Press; Oakville, Canada Year 2018 ISBN 978-1-77188-600-0 Description ]. The plant is also commonly grown as an ornamental - a wide range of cultivated forms have been developed some of them suitable for use as hedges or ground cover. This is the most widespread species of conifer in the world. While it is struggling to survive in some areas, e.g. England, it is increasing elsewhere; both phenomena in its population dynamics are related to shifts in agricultural practices and general land use. Globally, this species or any of its varieties are not threatened with extinction. The plant is classified as 'Least Concern' in the IUCN Red List of Threatened Species(2013)[ 338 Title IUCN Red List of Threatened Species Publication Author Website http://www.iucnredlist.org/ Publisher Year 0 ISBN Description A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat. ].