Is this plant invasive?

It can be quite aggressive in a garden setting due to its spreading root system.

Does it need full sun?

It prefers full sun to partial shade for the best growth.

Plant guide

Spreading dogbane.

Apocynum androsaemifolium

Pronounced uh-POS-ih-num an-dro-see-mih-FO-lee-um

Also known as Bitter-root, Bitterroot, Common Dogbane, Flytrap Dogbane, Spreading Dogbane, bitter dogbane, creeping dogbane, dogsbane

Apocynum androsaemifolium — Photo by Ian Adams (CC BY) via gbif

Spreading dogbane is a charming native perennial that produces clusters of delicate, bell shaped pink flowers. It spreads through underground rhizomes, making it a great choice for naturalizing in wilder garden spaces. You will love how it attracts pollinators like bees and butterflies to your yard.

At a glance

Care level: Easy
Plant type: Perennial
Light: Full sun to partial shade
Indoor light: Bright indirect
Water: Every 7 to 14 days
Mature size: 2 to 4 feet
Growth rate: Medium
Hardiness: USDA 3 to 8
Bloom time: Early to mid summer

Care

Give this plant plenty of space to spread, as it can be quite vigorous in the right spot. Keep an eye out for aphids on the new growth during the spring. It is very hardy and does not need much fuss once it is established.

Watering: Water deeply when the top inch of soil feels dry to the touch.
Feeding: A light application of compost in the spring is plenty for this hardy plant.
Pruning: Cut back the dead stems to the ground in late winter or early spring.
Repotting: If growing in a container, move to a larger pot once the rhizomes become crowded.
Soil: Well draining, sandy or rocky soil
Soil pH: 6.0 to 7.5
Temperature: -35 to 30°C
Humidity: 40 to 70%
Drought tolerance: High
Lifespan: Perennial, typically 10 plus years
Fragrance: Strong
Deer and rabbits: High

Safety

People: All parts of this plant contain cardiac glycosides that are poisonous if ingested.
Pets: This plant is toxic to cats and dogs if ingested due to the presence of cardiac glycosides.
Children: Keep this plant away from children because all parts are toxic if ingested and the sap is irritating.
Contact allergens: The milky white sap can cause skin irritation or dermatitis in sensitive individuals.
Airborne allergens: There are no notable respiratory allergens associated with this plant.
Edibility: This plant is toxic and should not be consumed by humans or pets.

How to identify it

Bell shaped pink flowers
Opposite oval shaped leaves
Milky sap inside stems
Slender seed pods in pairs

Height: 0.3 to 1.2m
Spread: 0.6 to 1.5m
Leaves: green, deciduous
Flowers: pink, white, 0.5 to 1cm
Fruit: brown, Late summer to autumn

Problems to watch for

Aphids · Small insects that cluster on new growth and suck plant juices.

By symptom

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Growing it

Propagation: division, seed, cuttings
When to plant: spring, autumn
Overwintering: The foliage will die back to the ground after the first frost. You can leave the stems for winter interest or cut them back to the soil line in late autumn.
In containers: It is not well suited for containers due to its vigorous rhizomatous growth habit.

Give this plant plenty of space to spread, or plant it in a contained area to keep it from taking over your garden beds.

Grows well with

Butterfly Weed · They share similar light and moisture requirements in a meadow setting.
Little Bluestem · This grass provides a nice structural contrast to the spreading habit of the dogbane.

Similar species

Common Milkweed · It shares a similar milky sap and is also a vital host plant for pollinators.

Science

Family: Apocynaceae
Genus: Apocynum
Order: Gentianales
Class: Magnoliopsida
Native range: Widespread across North America.
Conservation: It is not currently listed as endangered or threatened in its native range.

This plant thrives in open fields and forest edges where it can spread freely through its rhizomatous root system.

Value to wildlife: nectar source, larval host plant
Pollinators: bees, butterflies, moths
Uses: pollinator garden, native plant restoration, wildlife habitat

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 2/9
Soil reaction: 6/9
Light: 7/9
Temperature: 5/9
Moisture: 4/9
Nutrients: 3/9

Taxonomy resolved against GBIF.

Questions people ask

Is this plant invasive?: It can be quite aggressive in a garden setting due to its spreading root system.
Does it need full sun?: It prefers full sun to partial shade for the best growth.

Where the name comes from

The genus name Apocynum comes from Greek words meaning away and dog, reflecting its historical reputation as poisonous to dogs, while the species name means leaves like Androsaemum, an old name for tutsan.

Good to know

The common name refers to the plant's historical reputation as being poisonous to dogs.
It spreads aggressively through underground rhizomes.
The flowers are shaped like tiny bells and have a lovely fragrance.

Also in

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This guide was generated with AI on October 19, 2026 and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.