Galeopsis tetrahit - L.
Common Name Common Hemp Nettle, Brittlestem hempnettle
Family Lamiaceae or Labiatae
USDA hardiness Coming soon
Known Hazards The plant is poisonous, causing paralysis[74].
Habitats Arable land, sometimes in woods, fens and wet heaths[17].
Range Europe, including Britain, from Iceland and Russia to Spain and Macedonia.
Edibility Rating  
Other Uses  
Weed Potential Yes
Medicinal Rating  
Moist Soil Semi-shade Full sun

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Galeopsis tetrahit Common Hemp Nettle, Brittlestem hempnettle
Galeopsis tetrahit Common Hemp Nettle, Brittlestem hempnettle
Physical Characteristics
 icon of manicon of flower
Galeopsis tetrahit is a ANNUAL growing to 1 m (3ft 3in).
It is not frost tender. It is in flower from Jul to September, and the seeds ripen from Aug to October. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Self.The plant is self-fertile.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.


Woodland Garden Sunny Edge; Dappled Shade; Cultivated Beds;
Edible Uses
Edible Parts: Oil.
Edible Uses: Oil.

None known
Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

Antispasmodic;  Detergent;  Expectorant;  Resolvent.

The plant is antispasmodic, detergent, expectorant and resolvent[240]. It is used in the treatment of tissue-wasting complaints[240]. An infusion of the plant is used in the treatment of pulmonary complaints[240].


Other Uses
Fibre;  Oil.

A drying oil is obtained from the seed. It is used as a polish for leather[74, 100]. A fibre is obtained from the stems, it is used for making cord[100].
Cultivation details
Grows in most soils, disliking heavy shade. This plant is sometimes grown in the wild garden[200]. An aggregate species[17]. It is a natural hybrid, G. speciosa x G. pubescens[200].
Seed - sow spring in situ[200]. Germination usually takes place within a month.
Other Names
Found In
Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status
IUCN Red List of Threatened Plants Status :
Related Plants
Latin NameCommon NameEdibility RatingMedicinal Rating
Galeopsis bifidaSplitlip hempnettle00
Galeopsis ladanumBroadleaf Hemp Nettle, Red hempnettle00
Galeopsis segetumDowny Hemp Nettle02
Galeopsis speciosaLarge Flowered Hemp Nettle, Edmonton hempnettle00


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Botanical References
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Readers comment
albert   Fri Feb 20 2009
i have placed a link to your site at hope you approve albert
   Jun 16 2012 12:00AM
The leaves, flowers and seeds are said to be edible by the french book "Plantes sauvages comestibles (Edible Wild Plants)" Ulmer editions of 2012.
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Subject : Galeopsis tetrahit  

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