Eupatory hemp leaves, Eupatory hemp, Oregano of the marshes, Cannabine, Grass of Sainte Cungonde, Eupatorium cannabinum: plant, cultivate, multiply

Eupatorium cannabinum, the chanvrine eupatory, is an indigenous herbaceous perennial used in gardens. A true butterfly magnet, this solid, decorative and honey-bearing plant is also medicinal.

Eupatory hemp leaves, Eupatorium hemp, Marsh oregano, Cannabine, Grass of Sainte Cungonde, Eupatorium cannabinum


Scientific N. Eupatorium cannabinum

Origin France, Europe, Asia Minor, North Africa

Flowering july october

Flowers pale pink, purple or white

Typeunworthy plant, honey plant, medicinal plant

Vegetationherbaceous perennial

Foliage persistent

Height1,50min, 50cm 1,80m

Plant and cultivate

Hardiness hardy to -25C

Exposition full sun partial shade

Soltolerant, silty clay

Acidity slightly acidic slightly basic

Humidity cool wet

Usecontainer, massive in mild climate


Multiplicationcutting, seedling


Eupatorium cannabinum, the cannabis leaf stand, is a plant lively belonging to the family Asteraceae, like les asters Where daisies. Eupatorium cannbinum is a native plant of France, distributed more widely in Europe, Asia Minor and North Africa. In France, it is found in slightly humid environments, at the edge of a ditch, in wet meadows, on the edge of a cool forest, often accompanied by alders.

As an indigenous plant, eupatoire chanvrine has a long history as a medicinal plant and thus has many common names, more or less local: eupatoire with hemp leaves, Eupatoire chanvrine, marsh oregano, cannabino, Sainte Cunégonde herb, chanvrin, Eurpatoire d’Avicenne. Despite the resemblance of its leaves to those of cannabis, it is not smoked, but is very easily cultivated in the garden as an ornamental plant. It is a great addition for refuge gardens for biodiversity.

Description of the hemp leaf stand

Eupatorium cannabinum is a perennial hemicryptophyte, the aerial parts of which die off and which disappears almost entirely in winter. It produces a mass of erect stems, branched on their upper part, 50 to 170 cm high, but which most often remain between 100 and 120 cm.

The wine-colored stems of the chanvrine eupatory have opposite and slightly stalked leaves. Their blade is composed of 3 to 5 palmate, lanceolate and finely toothed leaflets, hence their vague resemblance to cannabis leaves.

The eupatoire chanvrine blooms from July to October in broad terminal and subterminal branched corymbs.

The flower heads are dome-shaped, less dense than in the aster. Lowercase flowers are tubular, often purple and while their long white sexual parts emerge from the floral tube giving a fluffy texture to theinflorescence.

This species is nectariferous and very melliferous : its flowers nourish many pollinating insects, in particular butterflies who love it.

The flowers then produce the seeds, the small papus of which form rather pretty, fluffy silken balls, before flying away.

Cannabis leafed eupatorium varieties

  • Eupatorium cannabinum ‘Flower Full’ ou ‘Flower’ : is a version with double flowers, whose flowering heads are rounder and denser, rather pink.
  • Eupatorium cannabinum f. Albiflorum, is a form whose inflorescences are almost entirely white.

How to cultivate the chanvrine eupatory?

Eupatorium cannabinum is a strong plant that does not fear pests when offered the right conditions. She asks for a exposition sunny or partial shade, and an rich and humus-rich soil, wet to cool, or at least that does not dry out during the summer.

It grows in clays, silts, or even more stony soils, with an average pH.

The chanvrine eupatory is introduced to the garden preferably in spring or in late summer, but if the place is humid, it can be transplanted anytime from a potted plant.

Once installed, this native plant is quickly at ease and becomes vigorous: in the spring, when the young stems grow back and we see the width it takes, it is the most appropriate time to limit the extension of the strain if necessary.

Maintenance :

Each fall or end of winter, the old dry stems of the chanvrine stand are cleaned and composted. If you fear spontaneous sowing, the deflowered stems will be cut before setting to seeds.

How to use the hemp leaf eupatory?

In the garden

Without being of a very striking presence, the eupatory with leaves of cannabis makes a pleasant bank plant for ponds, but also a tall background or middle bed plant in the gardens of style cottage, cottage garden or natural: its foliage is fresh, rather pretty and dense, pleasantly fragrant when crumpled, its reddish stems are in contrast and its flowers, white to purple, in addition to attracting butterflies, are dense enough to provide a beautiful spot of natural color.

Its young foliage is healthy and beautiful. Butterflies fluttering around during its long bloom provide movement. Hoverflies and other gardener’s auxiliaries also find their account.

The chanvrine stand-alone plant is typically the native plant favorable to biodiversity to put in your garden: to use as a foil for larger flowers in the foreground, especially white, pink or cream, and for filling to limit the chore of weeding

Medicinal use

The chanvrine eupatory is a medicinal plant used to stimulate the immune system with a febrifuge and antiviral action, therefore in case of colds and flu.

It is also recognized for its choleretic properties (scientifically studied action on the gallbladder) and is used for disorders of the liver, spleen and gallbladder.

Eupatorium cannabinum is considered a tonic, an appetite-stimulating herb and a detoxifying herb.

It is sometimes also used externally on skin lesions: wounds, pimples, rosacea, scabies …

It is used in the form infusion of leaves and roots or from dyeing (alcohol-based preparation manufactured in Pharmacy).

Attention however, rich in multiple active molecules, chanvrin eupatorial should not be consumed in large quantities, not more than 3 times a day.

How to multiply cannabine?

Seedlings: seedsEupatorium cannabinum germinate in less than 3 months at 20 ° C.

The divisions are made in late summer or spring.

Species and varieties of Eupatorium

About forty species in this genus:

  • Eupatorium fistulosum, a large perennial 3 m high
  • Eupatorium purpurea, the purple eupatory
  • Eupatorium rugosum, cultivated as ‘Chocolate’
  • Eupatorium fortunei, another medicinal eupatory
  • Eupatorium maculatum, the spotted euphoria
  • Eupatorium ligustrum, Shrubby eupatory
Plants of the same genus

Source: Au Jardin, conseils en jardinage by

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