See how hard 'graft' can be used to create new varieties of trees
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Apple and pear tree are not all that they seem. It is possible to ‘stick’ different trees together in a process called ‘grafting’. Nearly all trees, including those from garden centres, have been grafted. The most usual is to use a root stock – ie the the bit with the roots growing on – and graft on the fruiting variety. Very often this ensures that a tree doesn’t grow too large.
However in the video you can see where the original orchard’s variety has become out-dated and uneconomic. Rather than replacing the whole tree, grafts have been placed on the branches.
Also the trees are trained into particular patterns. This ensures that the right amount of light is received for the variety in question.