The plant in question turned out to be a dogbane, a species commonly called Indian Hemp (Apocynum cannabinum). The hemp portion of its common name comes from the fact that Indians used fiber from the bark for making rope. Comments: Another common name for this plant is Indian Hemp, because native Amerindians obtained strong silky fibers from the stems. This plant is also poisonous when ingested. Once this plant is introduced into a new area, establishment happens quite quickly. Dogbane is found in the open woods, along roadsides, and in fields. Colorado State University web pages do not endorse any commercial providers or their products. Common Dogbane Apocynum cannabinum Dogbane family (Apocynaceae) Description: This herbaceous perennial plant becomes about 2½–5' tall at maturity. See below Description. Apocynum, commonly known as dogbane or Indian hemp, is a small genus of the flowering plant family Apocynaceae.Its name comes from Ancient Greek ἀπόκυνον apókunon, from ἀπο-apo-"away" and κύων kúōn "dog", referring to dogbane (Cionura erecta), which was used to poison dogs. Hemp dogbane, a poisonous herb, is found throughout the United States, including the western range states. Whether Hemp Dogbane is toxic is still a subject of discussion. Animals Affected Known as hemp dogbane and other common names, this native perennial is found throughout all of the continental United States and most of Canada. Hemp dogbane is a perennial that grows 1-2 meters tall. Normally, animals avoid hemp dogbane because of its bitter, sticky, milk-white juice. Antidigitalis antibody fragments (FAB Digibind) may be useful, but binding affinities to Apocynum glycosides have not been documented. American Indians used the stems of the plant to make rope, twine and baskets. A .gov website belongs to an official government organization in the United States. All parts of the plant are poisonous and can cause cardiac arrest if ingested. Apocynum means "Away dog!" Hemp dogbane weed is also known as Indian hemp (Apocynum cannabinum). Nor does Colorado State University warrant that the use of this information is free of any claims of copyright infringement. It also is called dogbane, Indian physic, American hemp, and rheumatism weed. It is generally accepted that there is risk of poisoning all animal classes from grazing or feeding dried hemp dogbane. The seedlings of common milkweed and hemp dogbane ger­minate initially from seeds, but once the plants are established, they can emerge from adventitious buds on creeping roots or rhizomes. It is moderately toxic to dogs. Crossbow® (a pre-package You might even say there is a family resemblance, since milkweeds are in the Dogbane (Apocynaceae) family. Generally only very small quantities of the plant need to be ingested to invoke the potent effects of the toxins. Both dried and green plants are toxic. The toxins are cardiac glycosides which inhibit the heart muscle causing cardiac arrest. The plant begins growing in late spring or early summer. Indian hemp fibers range from 1-2 meters long and are yellow to brown to gray in color. Dried leaves in hay are also toxic. It’s easy to understand how my friend was fooled, since Indian Hemp and the other dogbane species resemble milkweeds. If you suspect your pet may have ingested a potentially toxic substance, call the APCC at (888) 426-4435 or contact your local veterinarian as soon as possible. The common name, dogbane, refers to the plant's toxic nature, which has been described as "poisonous to dogs," but it is poisonous to animals and humans alike. Dogbane, dog-bane, dog's bane, [citation needed] and other variations, some of them regional and some transient, are names for certain plants that are reputed to kill or repel dogs; "bane" originally meant "slayer", and was later applied to plants to indicate that they were poisonous to particular creatures. The plant got it's name from when native Americans use to … It’s easy to understand how my friend was fooled, since Indian Hemp and the other dogbane species … Uses: Native Americans used the stem fibers to make thread, cord, bowstrings, and fishing nets. However, some Lepidoptera feed on this plant, such as two hummingbird moths. The smooth-edged leaves are hairy on the lower surface. and cannabinum means "like hemp," in reference to the strong cordage that was made by weaving together the stem's long fibers. Indians used the fibres from the stem to make bags, mats, nets, and cordage. Ashame this is so poisonous. 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