Hemp Agrimony
Eupatorium cannabinum
- Native to:
- Albania, Algeria, Austria, Baleares, Baltic States, Belarus, Belgium, Bulgaria, Corse, Cyprus, Czechia-Slovakia, Denmark, East Aegean Is., Finland, France, Germany, Great Britain, Greece, Hungary, Iran, Iraq, Ireland, Italy, Kazakhstan, Krym, Lebanon-Syria, Morocco, Netherlands, North Caucasus, Norway, NW. Balkan Pen., Palestine, Poland, Portugal, Romania, Russia, Sardegna, Sicilia, Spain, Sweden, Switzerland, Transcaucasus, Türkiye, Türkiye-in-Europe, Turkmenistan, Ukraine, Uzbekistan
Kurt Stueber
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Asteraceae
- Genus:
- Eupatorium
- Species:
- Eupatorium cannabinum
- USDA Symbol:
- EUCA9
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 150 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jul,aug,sep
- Bloom Colors:
- pink, purple, white
Wildlife Benefits
- Bees:
- ★★☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★★★★★ Documented Lepidoptera association (GBIF)
Keystone Species Ranking
- Caterpillar Keystone:
- ★★★☆☆ Butterfly & moth species supported by this genus (NWF)
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies, moths
Soil Requirements
- Soil Type:
- rich, moist, well-drained loamy soil
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- commonly found in wet meadows and riverbanks
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds require cold stratification for 4-8 weeks to break dormancy; surface sow on moist soil and keep at 20°C after stratification.
ORGHPS Germination Guide: Sow @ 20C. Germinates within 3 months.