Hemp-agrimony - Eupatorium cannabinum
Robust medium to tall hairy plant. Stem erect often reddish. Leaves opposite, deeply 3-5 lobed, leaflets coarsely toothed. Flowerheads pink or purplish 2 to 5 mm in dense rather flat topped clusters, florets all tubular.
Damp habitats. Streamsides etc.
July to September.
Perennial.
Fairly common in some parts of England and Wales but scarce elsewhere.
Never common locally and is now becoming scarce in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 24 of the 617 tetrads.
In the current checklist (Jeeves 2011) it is listed as Native; occasional; becoming scarce
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Species profile
- Common names
- Hemp-agrimony
- Species group:
- flowering plant
- Kingdom:
- Plantae
- Order:
- Asterales
- Family:
- Asteraceae
- Records on NatureSpot:
- 63
- First record:
- 24/08/1996 (Steve Woodward)
- Last record:
- 29/07/2025 (Smith, Peter)
Total records by month
% of records within its species group
10km squares with records
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Latest images
Latest records
Hemp-agrimony Plume
The larva of the Hemp-agrimony Plume moth (Adaina microdactyla) galls the stems of Hemp-agrimony and this moth is probably most easily recorded by recording the galls or exit holes in the host plant.
Liriomyza strigata
The larva of the Agromyzid fly Liriomyza strigata mines the leaves of a wide variety of plants, with records from 47 plant genera in 15 plant families in Britain. It is an upper surface mine usually following the midrib and showing side branches along the veins, but the mine can be variable depending on the host plant used. Frass appears in long strings.
Liriomyza eupatorii
The larvae of the fly Liriomyza eupatorii mine the leaves of various plants, including Hemp-agrimony (Eupatorium cannabinum). The mine usually starts with a spiral (that quickly turns brown) and then extends into a fairly straight corridor of similar width throughout its length. The frass occurs in long strings.

























