Armoracia rusticana Horse-radish I
This introduction from West Asia has been grown in gardens and then very successfully escaped into the wild. It is often seen on roadside verges where, until it flowers, you could be fooled into thinking you were looking at a dock like Rumex obtusifolius (Broad-leaved Dock).
It is now common throughout England and most of Wales but scattered in Scotland and Ireland.
Waste Ground Ellesmere Port 18th May 2005
Added on October 10th 2005, updated 13th October 2008, updated Feb 27th 2010, updated 15th June 2017