Last week as I was picking fruit from some small apple trees I noticed how badly grafted one of them was. It reminded me that a few weeks ago I wrote about the history of grafting and prompted me to take that story into the 20thc and talk about the M9.
By that I don’t mean the motorway from Edinburgh to Dunblane but a dwarfing rootstock for apples developed, along with many others, at East Malling Research station.
So read on if you’ve ever wondered what all those strange codes and numbers are on the labels of fruit trees in garden centres and nurseries? Who, for instance, is St Julien? Gisela 5? And what does M27 or MM9 actually mean? How has M9 reshaped the global landscape and the economics of apple production?
And finally do you know what an apple trees roots look like? If you don’t, you might need a rhizotron…so read on to find out what that is!










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