A neighbour had a plum tree in his front garden, and wanted rid of it. Was going to take it down the council dump. So of course, I offered to give it a good home on the plot. The trunk is about 4" diameter, the tree probably 6 or more years old. Well he dug it up earlier this year - I carted it over to the allotment (boy was it heavy!) and spent 4 hours digging the hole and manoeuvering the thing into place. I was worried it wouldn't take - lots of root had been severed and it was so large - but it's in blossom now, and if I keep an eye on it I reckon I've got a good freebie there.