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Cynara cardunculus  • 

Photo: Cardoon


General description

The wild cardoon is a stout herbaceous perennial plant growing to 0.8–1.5 m (31–59 in) tall, with deeply lobed and heavily spined green to grey-green tomentose leaves up to 50 cm (20 in) long, with yellow spines up to 3.5 cm long. The flowers are violet-purple, produced in a large, globose, massively spined capitulum up to 6 cm (2 in) in diameter.[1][2][3][4]

It is adapted to dry climates, occurring wild from Morocco and Portugal east to Libya and Greece and north to France and Croatia; it may also be native on Cyprus, the Canary Islands and Madeira.[5] In France, it only occurs wild in the Mediterranean south (Gard, Hérault, Aude, Pyrénées-Orientales, Corsica).[3] It has become an invasive weed in the pampas of Argentina,[4] and is also considered a weed in Australia and California.

In cultivation in the United Kingdom, this plant has gained the Royal Horticultural Society's Award of Garden Merit.[6]

Plant requirements

Cardoon requires a long, cool growing season (about five months), but it is frost-sensitive. It also typically requires substantial growing space per plant, so is not much grown except where it is regionally popular.

Practical use

There are two main cultivar groups, the cardoon (Cynara cardunculus Cardoon Group, syn. C. cardunculus var. altilis DC), selected for edible leaf stems, and the artichoke (Cynara cardunculus Scolymus Group, previously distinguished as Cynara scolymus or C. cardunculus var. scolymus (L.) Fiori), selected for edible flower buds. They differ from the wild plant in being larger (up to 2 m tall), much less spiny, and with thicker leaf stems and larger flowers, all characteristics selected by man for greater crop yield and easier harvest and processing.[1][7] Wild and cultivated cardoons and artichokes are very similar genetically, and are fully interfertile, but only have very limited ability to form hybrids with other species in the genus Cynara.[1]


50 - 120 cm