Artemisia dracunculus Tarragon |
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Scientific classification | |
Kingdom: | Plantae |
(unranked): | Angiosperms |
(unranked): | Eudicots |
(unranked): | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Genus: | Artemisia |
Species: | A. dracunculus |
Binomial name | |
Artemisia dracunculus L. not Hook.f. 1881 |
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Synonyms | |
Synonymy
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Tarragon (Artemisia dracunculus), also known as estragon, is a species of perennial herb in the sunflower family. It is widespread in the wild across much of Eurasia and North America, and is cultivated for culinary and medicinal purposes.
One sub-species, Artemisia dracunculus var. sativa, is cultivated for use of the leaves as an aromatic culinary herb. In some other sub-species, the characteristic aroma is largely absent. The species is polymorphic. Informal names for distinguishing the variations include "French tarragon" (best for culinary use), "Russian tarragon," and "wild tarragon" (covers various states).
Tarragon grows to 120–150 cm (47–59 in) tall, with slender branched stems. The leaves are lanceolate, 2–8 cm (0.79–3.15 in) long and 2–10 mm broad, glossy green, with an entire margin. The flowers are produced in small capitulae 2–4 mm diameter, each capitulum containing up to 40 yellow or greenish-yellow florets. French tarragon, however, seldom produces any flowers (or seeds). Some tarragon plants produce seeds that are generally only sterile. Others produce viable seeds. Tarragon has rhizomatous roots that it uses to spread and readily reproduce.
French tarragon is the variety used for cooking in the kitchen and is not grown from seed, as the flowers are sterile; instead it is propagated by root division.
Russian tarragon (A. dracunculoides L.) can be grown from seed but is much weaker in flavor when compared to the French variety. However, Russian tarragon is a far more hardy and vigorous plant, spreading at the roots and growing over a meter tall. This tarragon actually prefers poor soils and happily tolerates drought and neglect. It is not as strongly aromatic and flavorsome as its French cousin, but it produces many more leaves from early spring onwards that are mild and good in salads and cooked food. Russian tarragon loses what flavor it has as it ages and is widely considered useless as a culinary herb, though it is sometimes used in crafts. The young stems in early spring can be cooked as an asparagus substitute. Horticulturists recommend that Russian tarragon be grown indoors from seed and planted out in the summer. The spreading plants can be divided easily.