By Robertpeter
crevillente,,
Spain 
sorry again but when i started grafting and buding years ago was told you cannot graft a pelegonium ,i alway wondered why .then at royal horticulture society,i ask the same question,still answer impossible,now last year in america private man .in a greenhouse grafted three different Pelegonium cuttings to one root .sold his idea to other growers now it is done all over America,just look up the web you can see how it is done,
9 May, 2015
Well I'm confused by what you say - the Americans have been grafting Pelargoniums since 1841 - there's a reference to this in The Magazine of Horticulture - Botany and All Useful Discoveries and Improvements, Volume VII, published 1841 in Boston. Also mentioned in A Dictionary of Modern Gardening, published 1847, where the author speaks of a person in Atley grafting Pelargoniums, so it would seem grafted Pelargoniums were something people were mucking about with more than a century ago. I'm puzzled as to why the RHS would say it wasn't possible, when clearly it is.
9 May, 2015