Eupatorium cannabinum f. cannabinum 'Flore Pleno' (Double hemp agrimony)

Botanical name

Eupatorium cannabinum f. cannabinum 'Flore Pleno'

Other names

Double hemp agrimony

Genus

Eupatorium Eupatorium

Variety or Cultivar

'Flore Pleno' _ 'Flore Pleno' is a robust, clump-forming perennial with erect, dark, purple-flushed stems, aromatic, palmate, toothed, dark green leaves and, from summer into autumn, dense, flat-topped clusters of doulbe, purple-pink flowers.

Foliage

Deciduous

Habit

Clump-forming, Erect flower stem, Upright

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Colour

Flower

Purple-pink in Summer; Purple-pink in Autumn

Foliage

Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn

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How to care

Watch out for

Pests

Generally pest-free.

Diseases

Generally disease-free.

General care

Propagation methods

Division, Seed

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Monthly care advice

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Where to grow

Eupatorium cannabinum f. cannabinum 'Flore Pleno' (Double hemp agrimony) will reach a height of 1.2m and a spread of 0.8m after 2-5 years.

Suggested uses

Architectural, Cottage/Informal, Beds and borders, Prairie planting

Cultivation

Plant in any moist, moderately fertile soil in full sun to partial shade. Water during dry periods until the plant becomes established. Cut down in late winter or spring. May be invasive in beds and borders.

Soil type

Clay, Loamy

Soil drainage

Moist but well-drained, Moisture-retentive

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4

Defra's Risk register #1

Plant name

Eupatorium cannabinum f. cannabinum 'Flore Pleno' (Double hemp agrimony)

Common pest name

Scientific pest name

Coleosporium eupatorii

Type

Fungus

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

A rust affecting Pinus spp. Pathway for entry mitigated by EU regulation of bonsai imports. The trade of pines and other hosts need to be monitored.

About this section

Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.

Traveling or importing plants? Please read "Don't risk it" advice here

Suspected outbreak? Click here for contact details to report to the relevant authority.

Date updated: 7^th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/