Hemp-agrimony - Eupatorium cannabinum

Alternative names
Hemp Agrimony
Description

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.

Identification difficulty
Habitat

Damp habitats. Streamsides etc.

When to see it

July to September.

Life History

Perennial.

UK Status

Fairly common in some parts of England and Wales but scarce elsewhere.

VC55 Status

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

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map

Species profile

Common names
Hemp-agrimony
Species group:
Wildflowers
Kingdom:
Plantae
Order:
Asterales
Family:
Asteraceae
Records on NatureSpot:
59
First record:
24/08/1996 (Steve Woodward)
Last record:
04/09/2023 (Willis, Jill)

Total records by month

% of records within its species group

10km squares with records

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Latest images

Latest records

Photo of the association

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.