Great Mullein
Verbascum thapsus
Full description
Great Mullein, also known as Aaron's Rod, is a biennial plant which forms a large leaf rosette in the first year and then produces a leafy flower stem in the second year. The leaves are greyish with soft hairs and the flowers yellow, borne at the top of the stalk.
It is mainly found on rough dry grassland, stony sites, roadsides and hedgerows.