treacle mustard

Related to treacle mustard: tansy mustard

treacle mustard

n
(Plants) a N temperate cruciferous annual plant, Erysimum cheiranthoides, having small yellow flowers. It is a common weed in cultivated ground
[C16: so called because of its alleged medicinal properties. See treacle]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Am I right in saying there's one called Treacle Mustard?" asks Martha Spades, of Tiptree, Essex.
The adventurous will browse nurseries and Women's Institute stalls for neat little brown envelopes containing devil's scabious, treacle mustard and germander speedwell, but there's no need to be flash.
The adventurous may prefer the gloriously-named varieties like greater stitchwort, germander speedwell and treacle mustard. There's even a dinner party show-stopper: "Would you like to see my devil's bit scabious?"