Blueweed (Vipers Bugloss)
Echium vulgare

Adult
vipers bugloss
A native of Eurasia, this biennial or short-lived perennial grows from 1' to 3' tall. Stiff hairs on thestems may cause skin irritation in humans and it's toxic to horses and cattle.
Rosette
vipers bugloss
Infestation
vipers bugloss
Vipers bugloss does well in poor soils on rangleland, along roadways and waterways and in disturbed sites.
Fower
vipers bugloss
Bright blue flowers produce 4 seeds each. Seeds can remain viable for up to 3 years in the soil.