Yes, Dogbane Hemp is toxic to dogs!
Dogs accidentally consuming the Dogbane Hemp plants can show the following clinical symptoms: Vomiting, Prolonged Depression, Incoordination, Hypersalivaton, Sleepiness Or Excitation, Dilated Pupils, Low Body Temperature, Low Blood Pressure, Coma, Seizure And Death (In Rare Cases).
Dogbane Hemp consumption is also toxic to Cats and Horses.
Toxic Principles Of Dogbane Hemp: Cardenolides.
More Info About The Dogbane Hemp Plant
Scientific Name: Apocynum spp.
Family: Apocynaceae.
Also known as: Bitterroot, Indian Hemp.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.