I have just seen notes on this site re Abutilon Kentish Belle. I am simply posting because I have a particular interest in this plant, in that it was raised by my late father - A V Pike, when he was Head Gardner at Hever Castle in the 1950s. The same crossing also produced the sibling plant Abutilon Cynthia Pike - named after my elder sister.
I do not have Kentish Belle in my garden (readily available now in good garden centres and nurseries - at a price!), but I do have Cynthia Pike, a better progeny, although slightly more tender, and not readily available. Having said that, A x Cynthia Pike in my garden here in South Devon, has thrived outside, for a good few years and some harder winters, although it has to be said, up against a south facing wall. Another one (the elder) is on an east facing wall, and is still there!
I am keen to keep "Cynthia Pike" alive, in all senses of the word (she is still alive), but we are both getting on! If anybody is local to South Devon, and would like to take cuttings, or ask me to raise some next year, please feel free.