Plant guide

Hemp-agrimony.

Eupatorium cannabinum

Pronounced yoo-pah-TOR-ee-um kan-NAB-ih-num

Also known as Hemp Agrimony, Hemp-Agrimony

Hemp-agrimony is a lovely perennial that brings a wild, natural feel to damp garden spots. It is a magnet for butterflies and bees, making it a fantastic choice for supporting local pollinators. You will love how its soft, fuzzy flower heads add texture to your landscape.

At a glance

Care level: Easy
Plant type: Perennial herb
Light: Full sun to partial shade
Indoor light: Bright indirect
Water: Every 3 to 7 days
Mature size: 1.5 meters
Growth rate: Fast

Care

Keep the soil consistently moist, as this plant naturally thrives in damp areas. Watch for wilting, which is a clear sign it needs more water. It is quite hardy and generally stays healthy without much fuss.

Watering: Water whenever the top inch of soil starts to feel dry to the touch.
Feeding: Apply a balanced organic fertilizer once in early spring to encourage vigorous growth.
Pruning: Cut the stems back to the ground in late winter or early spring before new growth appears.
Repotting: If growing in a container, move to a larger pot every couple of years to prevent it from becoming root bound.
Soil: Moist, fertile, well-draining soil
Soil pH: Neutral to slightly alkaline

Safety

Pets: This plant is considered toxic to cats and dogs if ingested.

How to identify it

Opposite, palmate, three-lobed leaves
Clusters of fuzzy, pinkish flowers
Stems often have reddish purple spots
Tall, upright, branching growth habit

Science

Family: Asteraceae
Genus: Eupatorium
Order: Asterales
Class: Magnoliopsida

Taxonomy resolved against GBIF.

Also in

Plants toxic to cats and dogs

Is your hemp-agrimony looking unwell?

This page is a general guide. Pocket Botanist diagnoses problems from a photo of your actual plant, works out watering for your light and conditions, and reminds you when care is due.

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This guide was generated with AI and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.