|Artemisia absinthium growing wild in the Caucasus|
Artemisia absinthium (absinthe, absinthium, absinthe wormwood, grand wormwood, wormwood) is a species of Artemisia native to temperate regions of Eurasia and Northern Africa and widely naturalized in Canada and the northern United States. It is grown as an ornamental plant and is used as an ingredient in the spirit absinthe as well as some other alcoholic beverages.
Artemisia absinthium is a herbaceous perennial plant with fibrous roots. The stems are straight, growing to 0.8–1.2 metres (2 ft 7 in–3 ft 11 in) (rarely 1.5 m, but, sometimes even larger) tall, grooved, branched, and silvery-green. The leaves are spirally arranged, greenish-grey above and white below, covered with silky silvery-white trichomes, and bearing minute oil-producing glands; the basal leaves are up to 25 cm long, bipinnate to tripinnate with long petioles, with the cauline leaves (those on the stem) smaller, 5–10 cm long, less divided, and with short petioles; the uppermost leaves can be both simple and sessile (without a petiole). Its flowers are pale yellow, tubular, and clustered in spherical bent-down heads (capitula), which are in turn clustered in leafy and branched panicles. Flowering is from early summer to early autumn; pollination is anemophilous. The fruit is a small achene; seed dispersal is by gravity.
It grows naturally on uncultivated arid ground, on rocky slopes, and at the edge of footpaths and fields. Although once relatively common, it is becoming increasingly rare in the UK where it has recently been suggested that it is an archeophyte rather than a true native.
The plant can easily be cultivated in dry soil. It should be planted under bright exposure in fertile, mid-weight soil. It prefers soil rich in nitrogen. It can be propagated by ripened cuttings taken in spring or autumn in temperate climates, or by seeds in nursery beds. Artemisia absinthium also self-seeds generously. It is naturalised in some areas away from its native range, including much of North America and Kashmir Valley of India.
This plant, and its cultivars 'Lambrook Mist' and 'Lambrook Silver' have gained the Royal Horticultural Society's Award of Garden Merit. These two short cultivars are very similar and more silver than typical British absinthium material and probably derive from southern Europe 'Lambrook Silver' is the earliest of these cultivars having been selected in the late 1950s by Margery Fish who developed the garden at East Lambrook Manor. 'Lambrook Mist' was selected about 30 years later by Andrew Norton, a subsequent owner of the garden. Both gained their AGMs (Award of Garden Merit) during the RHS Artemisia Trial 1991–3.
Cultivar 'Silver Ghost' is a taller silver plant which flowers much later (August – September) than typical absinthium (June – July) in UK and therefore holds its silver appearance for longer. This and a more feathery leaved cultivar 'Persian Lace' were selected by National Collection Holder John Twibell in the 1990s.
It is an ingredient in the spirit absinthe, and is used for flavouring in some other spirits and wines, including bitters, vermouth and pelinkovac. As medicine, it is used for dyspepsia, as a bitter to counteract poor appetite, for various infectious diseases, Crohn's disease, and IgA nephropathy.
Most chemotypes of Artemisia absinthium contains (−)-α- and/or (+)-β-thujone, though some do not. (−)-α-Thujone by itself is a GABAA receptor antagonist that can cause convulsions and death when administered in large amounts to animals. However, there is only one case of documented toxicity of wormwood involving a 31-year-old man who drank 10 ml of steam-distilled volatile oil of wormwood, wrongly believing it was absinthe liqueur. Medicinal extracts of wormwood have not been shown to cause seizure or other adverse effects at usual doses. No one has ever proven that thujones cause the toxicity of wormwood extracts of any kind, including absinthe, at excessive doses.
Artemisia comes from Ancient Greek ἀρτεμισία, from Ἄρτεμις (Artemis). In Hellenistic culture, Artemis was a goddess of the hunt, and protector of the forest and children. absinthum comes from the Ancient Greek ἀψίνθιον. An alternative derivation is that the genus was named after Queen Artemisia who was the wife and sister of Mausolus ruler of Caria. When Mausolus died c. 353 BC, he was buried in a huge tomb dedicated to his memory – the Mausoleum at Halicarnassus, the ruins of which are still present at Bodrum in modern-day Turkey. The word "wormwood" comes from Middle English wormwode or wermode. Webster's Third New International Dictionary attributes the etymology to Old English wermōd (compare with German Wermut and the derived drink vermouth), which the OED (s.v.) marks as "of obscure origin".
Nicholas Culpeper insisted that wormwood was the key to understanding his 1651 book The English Physitian. Richard Mabey describes Culpeper's entry on this bitter-tasting plant as "stream-of-consciousness" and "unlike anything else in the herbal", and states that it reads "like the ramblings of a drunk". Culpeper biographer Benjamin Woolley suggests the piece may be an allegory about bitterness, as Culpeper had spent his life fighting the Establishment, and had been imprisoned and seriously wounded in battle as a result.
William Shakespeare referred to wormwood in his famous play Romeo and Juliet: Act 1, Scene 3. Juliet's childhood nurse said, "For I had then laid wormwood to my dug" meaning that the nurse had weaned Juliet, then aged three, by using the bitter taste of Wormwood on her nipple.
John Locke, in his 1689 book titled An Essay Concerning Human Understanding, used wormwood as an example of bitterness, writing that "For a child knows as certainly before it can speak the difference between the ideas of sweet and bitter (i.e. that sweet is not bitter), as it knows afterwards (when it comes to speak) that wormwood and sugarplums are not the same thing."
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