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Indianhemp Dogbane
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Apocynum cannabinum
  

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About Indianhemp Dogbane (Apocynum cannabinum) Apocynum cannabinum (Dogbane, Amy Root, Hemp Dogbane, Prairie Dogbane, Indian Hemp, Rheumatism Root, or Wild Cotton) is a perennial herbaceous plant that grows throughout much of North America - in the southern half of Canada and throughout the United States. It is a poisonous plant: Apocynum means "poisonous to dogs". All parts of the plant are poisonous and can cause cardiac arrest if ingested. The cannabinum in the scientific name and the common names Hemp Dogbane and Indian Hemp refer to its similarity to Cannabis as a fiber plant (see Hemp), rather than as a source of a psychoactive drug (see Cannabis (drug)). Although dogbane is poisonous to livestock, it likely got its name from its resemblance to a European species of the same name. Apocynum cannabinum grows in open wooded areas, ditches, and hillsides. It is found in gravelly or sandy soil, mainly near streams in shady or moist places. Apocynum cannabinum grows up to 2 meters/6 feet tall. The stems are reddish and contain a milky latex capable of causing skin blisters. The leaves are opposite, simple broad lanceolate, 7-15 cm long and 3-5 cm broad, entire, and smooth on top with white hairs on the underside. It flowers from July to August, has large sepals, and a five-lobed white corolla. The flowers are hermaphrodite (have both male and female organs) and are pollinated by moths and butterflies. Invasive species. In gardens it can be invasive, growing from spreading roots.
Plant Description
Plant Type
Perennial herb

Flower Color
Cream, Brown

Flowering Season
Summer
Spring
Summer
Fall
Winter


Native Status
Native

Natural Setting
Site Type
Moist places

Sun
Part Shade

Elevation ?
-271' - 11144'

Annual Precip. ?
1.9" - 65.1"

Summer Precip. ?
0.15" - 2.96"

Coldest Month ?
24.3° F - 61.0° F

Hottest Month ?
42.6° F - 90.4° F

Humidity ?
0.23 vpd - 48.25 vpd

Soil Description
Prefers moist sandy or gravelly soil

Drainage
Fast

Sunset Zones ?
1*, 2*, 3*, 4, 5, 6*, 7*, 8*, 9*, 10, 14*, 15*, 16*, 17*, 18*, 19*, 20*, 21*

Landscaping Information
Water Requirement ?
Moderate - High
Extremely Low
Very Low
Low
Moderate - High


Nursery Availability
Commonly Available

Other Names
Common Names
Indian Hemp


Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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