According to a letter in the Daily Telegraph of 22 January 2014:
‘In the small burgh of Darvel in Ayrshire it was common up until the early Seventies for newlyweds to be given a root of rhubarb [Rheum x rhabarbarum] as a wedding present.’

Any comments would be gratefully received.

Image: South London Botanical Institute, London Borough of Lambeth; February 2014.