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Spreading Dogbane

Apocynum androsaemifolium

Family: Apocynaceae (a-pos-ih-NAY-see-ee) (Info)
Genus: Apocynum (a-POS-ih-num) (Info)
Species: androsaemifolium (and-row-say-mee-fol-ee-um) (Info)



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


12-18 in. (30-45 cm)

18-24 in. (45-60 cm)

24-36 in. (60-90 cm)

36-48 in. (90-120 cm)


12-15 in. (30-38 cm)

15-18 in. (38-45 cm)


USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:

Full Sun

Sun to Partial Shade


All parts of plant are poisonous if ingested

Bloom Color:


Bloom Time:

Mid Summer

Late Summer/Early Fall




Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:


Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

From seed; sow indoors before last frost

From seed; direct sow after last frost

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds


This plant has been said to grow in the following regions:

Rockford, Illinois

Wichita, Kansas

Buckfield, Maine

Brockton, Massachusetts

Worcester, Massachusetts

Erie, Michigan

Saint Helen, Michigan

Isle, Minnesota

Helena, Montana

Henderson, North Carolina

Warren, Oregon

Chelan, Washington

show all

Gardeners' Notes:


On Dec 4, 2015, Lona_Al from Warren, OR wrote:

Lovely little plant that grows in poor gravelly soils along roadways in Western Oregon. Often in part shade of oaks or D. firs, but also can take full sun. Good pollinator plant for large insects: bumblebees and butterflies. In milkweed family, with toxic sap.


On Apr 29, 2015, coriaceous from ROSLINDALE, MA wrote:

This might not be a bad plant for the wild meadow, but it's too aggressive for the border, and its running root is too deep to dig out.

Native to 44 states and all provinces.

This species has been known to trap a small syrphid fly too weak to pollinate it, but most insects do just fine: [[email protected]] The syrphid fly gets stuck by means of the sticky nectar.

The species that was once used to make cordage is A. cannabinum.

Wikipedia says: "Its name is from the Greek: apo, away and cyno, dog, attributed to its toxicity." The milky sap contains toxic cardiac gly... read more


On Apr 28, 2015, Bombix from Rockford, IL wrote:

A native plant highly valued for making cordage.


On Jun 22, 2008, altagardener from Calgary, AB (Zone 3b) wrote:

The common name "dogbane" is more likely derived from its reputed toxicity to dogs, as "bane" means "cause of harm".


On Nov 28, 2006, frostweed from Josephine, Arlington, TX (Zone 8a) wrote:

Spreading Dogbane Apocynum androsaemifolium is native to Texas and other States.


On Aug 16, 2002, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

The flowers of the plant can be deadly for insects when touched, scales in the throats of the flowers spring inwards, trapping the intruder.

The name "dogbane" derives from the root's reputed value as a remedy for the bites of mad dogs.