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Common Hemp Nettle Galeopsis tetrahit 

 
 
Attracts BeesBees are attracted to this plant
Attracts ButterfliesButterflies are attracted to this plant
Attracts HoverfliesHoverflies are attracted to this plant
Annual Life CycleAnnual life cycle
Two-Lipped FlowersTwo-lipped flowers
White FlowersWhite flowers
2 Petals2 petals
Jul-Sep Flowering
period
Elongated LeavesElongated leaves
Round-Toothed LeavesRound-toothed leaves
Square StemSquare stem
Tap RootTap root
100cmMaximum height
 
 
  Main image of Common Hemp Nettle

© 2020-2025 Adrian Briggs

 

Common Hemp Nettle is a native annual plant of the UK, typically found growing in damp ground, cropland and waste ground, to a mature height of up to 100cm.

Common Hemp Nettle is called a nettle after the shape of its leaves but is unrelated to the nettle. The flowers of Common Hemp Nettle may be white or lilac and are borne in clustered whorls, each in a sharp spiny calyx, at the top of its stems. They have a long flower tube 'throat' and wide lower lip central lobe, with markings, that helps distinguish the plant from a deadnettle.

Botanic classification and naming: Common Hemp Nettle is a member of the Mint (Lamiaceae) family. The genus name 'Galeopsis' identifies the plant as a Hemp Nettle and its species name 'tetrahit' means 'four-parted plant'.

Concerns: Common Hemp Nettle is a toxic plant.

Benefits: The plant is well known for attracting bumble bees and so is sometimes called the 'Bee Nettle'. Its seed provides a food source for birds.

Benefits to wildlife are also indicated with orange icons in the plant profile bar at the top.

 

 
Flower of Common Hemp Nettle

© 2021 Adrian Briggs

 

Flowers:
Common Hemp Nettle usually flowers between July and September.

Flower colour:

Flower Colour White

White

Flower shape:

Flower Shape  Two-lipped

Two-lipped

Petals:

Petal Number =  2

2

Leaf of Common Hemp Nettle

© 2021 Adrian Briggs

 

Leaves:

Leaf Shape:

Leaf Shape is Elongated

Elongated

Or:

Alternative Leaf Shape is Delta

Delta

Leaf Margins:

Leaf Margin is round-toothed

round-toothed

Stem of Common Hemp Nettle

© 2021 Adrian Briggs

 

Stem and Roots:

Stem shape:

Stem Shape is Square

Square

Root type:

Root Type is Tap

Tap