Eupator Chanvrine (Eupatorium Cannabinum), Oregano Marsh

The chanvrine eupatory (Eupatorium cannabinum), is a large perennial (over 1 m) commonly found in moist sites, in the shade, at the edge of streams or in marshes, hence its vernacular name of marsh oregano. Frequent in the gardens of priests, it was called Grass of St. Cunegonde. Despite its resemblance to umbelliferae, it is part of the same family as daisies, namely Asteraceae.

Eupator chanvrine (Eupatorium cannabinum), oregano marsh

It forms a vigorous tuft with upright, reddish, hairy stems, with deciduous, palmate, medium green to dark green leaves, 5-12 cm in diameter, opposite, divided into 3 elongated and toothed segments, reminiscent of hemp leaves. Its rhizomatous root is gray, fibrous and gives off a foul odor.

The deep pink, purple-pink or white flowers, in flower heads 6 to 12 cm in diameter, are grouped at the top of each terminal stem, from late summer to autumn. They are rich in nectar and attract butterflies and bees.

Among the legends, the Chantpiratoire eupatoire would have had the faculty to give girls who hooked a stem under their skirt, irrepressible powers of seduction to which young men could not resist. And conversely, the suitors could captivate their bride by making him breathe the juices of the Chantpriven conspiracy: she offered herself to all their desires!

Therapeutically, more concretely, the leaves and the root of the eupatorium chanvrine have virtues cholagogues, hepatoprotective, antitumorales and, externally, cicatrisantes of the wounds and contusions.

  • Family: Asteraceae
  • Type: perennial
  • Origin: Europe
  • Color: pink, white flowers
  • Sowing: yes
  • Cutting: yes
  • Planting: spring
  • Flowering: July to October
  • Height: up to 1.5 m

Ideal soil and exposure for the chanvrine eupatory

The hippocampus is cultivated in the shade or in the sun in soil of any type preferably soil rich, but especially cool wet.

Date of seeding, cutting and planting of the chanvrine kelp

It is in the spring that you will sow the chanvrine eupator under a cold frame, but the tuft division as well as the herbaceous cuttings in the spring are faster.

Planting is done in the spring.

Advice of maintenance and culture of the chanprine eupatory

The plant is very demanding of water: in summer if the soil dries, water at least twice a week. At the end of flowering, the soil should just be kept moist: letting the foliage fade on the spot will protect the stump, although some prefer to remove the withered flowers.

Harvesting, conservation and use of the chanvrine eupatory

Fresh leaves applied to wounds and bruises help to heal them. Moreover, in the wild, wounded animals would come to rub them to heal their wounds.

The leaves and roots are used in infusion and decoction, for their medicinal properties.

Diseases, pests and parasites of the chanprine eupatorium

Slugs and aphids can visit it without much consequence.

Eupator chanvrine (Eupatorium cannabinum), oregano marsh

Location and favorable association of the chanvrine eupatory

It is a plant that is grown on the edge of the pond or in fresh or humid mass.

There are 40 species of the genus Eupatorium total of which the chanvrine eupatory (Eupatorium cannibinum) but also Eupatorium rugosum with pure white flowers with a variant Eupatorium rugosum 'Chocolate' offering chocolate foliage, Eupatorium purpureum with medium green leaves tinged with purple...

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