Heracleum mantegazzianum

Tracheophyta MagnoliopsidaApiaceaeHeracleumHeracleum mantegazzianum

Ecology

A very large perennial herb occurring in derelict gardens, neglected urban places and waste ground, on rubbish tips, roadsides and by streams and rivers, forming large colonies if allowed to prosper. It spreads by seed, which is prolifically produced. Lowland.

Status

Neophyte

World Distribution

Native of S.W. Asia.

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 6

Reaction (Ellenberg): 6

Nitrogen (Ellenberg): 8

0

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.6

July Mean Temperature (Celsius): 15.2

Annual Precipitation (mm): 876

Life form information

Height (cm): 350

Perennation - primary

Biennial, including monocarpic perennials

Life Form - primary

Hemicryptophyte

Woodiness

Herbaceous

Clonality - primary

Little or no vegetative spread

Distribution information

Count of 10km squares in Great Britain: 1079

Count of 10km squares in Ireland: 163

Count of 10km squares in the Channel Isles: 2

Atlas Change Index: 2.09

Weighted Changed Factor: 0

Weighted Change Factor Confidence (90%)

34

Distribution information

JNCC Designations

NBNSYS0000003711

PLANTATT - Attributes of British and Irish plants. (.zip 1455KB) This dataset was compiled and published in 2004, and last updated in November 2008. Download includes an Excel spreadsheet of the attributes, and a PDF explaining the background and nomenclature. Note that the PDF version is the booklet as published, whereas the Excel spreadsheet incorporates subsequent corrections. A hardcopy can be purchased from the Centre for Ecology and Hydrology.

Atlas text references