yellowweed

[ yel-oh-weed ]
/ ˈyɛl oʊˌwid /

noun

any of certain coarse goldenrods.
the European ragwort, Senecio jacobaea.

Origin of yellowweed

First recorded in 1750–60; yellow + weed1

British Dictionary definitions for yellowweed

yellowweed
/ (ˈjɛləʊˌwiːd) /

noun

any of various yellow-flowered plants, such as the ragwort in Europe and some species of goldenrod in the US