Eupatorium cannabinum
hemp agrimony
Vigorous upright perennial to about 1.5m tall, with reddish stems, dark green leaves palmately-divided into narrow leaflets, and dense terminal domed clusters of tiny light pink or purple flowers in late summer and early autumn
Other common names
ague weedandurion
see morebastard agrimony
common hemp agrimony
Dutch agrimony
hemlock parsley
hemp weed
holy rope
Indian ague root
water agrimony
water hemp
Size
Ultimate height
1–1.5 metresTime to ultimate height
2–5 yearsUltimate spread
1–1.5 metresGrowing conditions
Moisture
Moist but well–drained, Poorly–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Pink Purple | Green | ||
| Autumn | Pink Purple | Green | ||
| Winter |
Position
- Full sun
- Partial shade
Aspect
West–facing or South–facing or North–facing or East–facing
Exposure
Exposed or Sheltered Hardiness
H7Botanical details
- Family
- Asteraceae
- Native to GB / Ireland
- Yes
- Foliage
- Evergreen
- Habit
- Clump forming
- Genus
Eupatorium can be annuals, herbaceous perennials, subshrubs or evergreen shrubs, with small tubular flowers borne in terminal panicles or corymbs
- Name status
Correct
How to grow
Cultivation
Grow in any moist soil in full sun or partial shade. Can spread quickly, but is very attractive to butterflies and other insects
Propagation
Propagate by seed sown in containers in cold frame, or propagate by division in spring
Suggested planting locations and garden types
- Wildflower meadow
- Wildlife gardens
- Coastal
- Cottage and informal garden
- Flower borders and beds
Pruning
Cut back spent flowers at end of the flowering season
Pests
Diseases
Generally disease-free
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