Verbascum pulverulentum is also known as Hoary mullein. It is part of the Scrophulariaceae family of plants. It is a biennial. It grows up to 1.8m or 6ft tall. Verbascum pulverulentum leaves contain rotenone used as an insecticide and coumarin which helps prevent blood from clotting. It is native to Europe. Verbascum pulverulentum creates a rosette of leaves and a tall branching spike of yellow flowers in late spring and summer.
Verbascum pulverulentum prefers sun and well-drained soil and does well in most types of soils including dry ones. It does not do well in shade. Propagate by seed which germinates in 2 to 3 weeks or root cuttings.
I came across this Verbascum pulverulentum, the first time in the wild while visiting Noravank Monastery in Armenia.