Grafting
Please note, this page is under
construction, more to be added later. All commercially fruit
trees are
grafted. The process of grafting means to cut and combine 2 bits of
living tissue from different locations (but similar genetics) and bind
them together until they grow into each other, 'the two becoming one'.
Skin grafting is used in the treatment of human burns and plastic
surgery, donor hearts and kidneys are grafted in to a recipient, and
plant grafting is used to connect a genetically specific fruit variety
(otherwise known as scion or cultivar), selected for eating, juice or
cider qualities, to a set of roots (rootstock) which is itself selected
for genetic health, stability, reliable cropping and size. This gives
many benefits and has been practiced certainly since Roman times, the
practice is referred to by Saint Paul in the first century Anno Domini.
An apple cultivar, or clonal variety, originates from a pip (sexually
produced apple seed) which is sown and grows. Each one is different,
most will be of limited or no value (too acid, poor keeper, poor
cropper, lacking in aromatic flavour compounds, no disease resistance,
etc) but every now and then there is a happy coincidence of genes (see varieties) which gives the
gardener, and perhaps the world, a worthy new apple. Just as when Mr
Cox sowed some pips from a Ribston Pippin in his garden and one of them
grew into the incomparable apple Mr Cox named after himself. Every
Cox's Orange Pippin in the world has been grafted from clones
grafted from descendants of that original seedling. Cox's Pomona came
from the same sowing: as Lawrence Hills wrote 'A very lucky chance to
get 2 good apples from one sowing of pips'. But then Ribston
Pippin is
a genetically very precious apple parent, more people sould grow
this important heritage apple.
Grafting can be done with a sharp penknife, some strips of
polythene cut from a freezer bag, some
rootstocks and some scion wood, plus some information, which I am about
to give you for free. The
Opinel number 6 stainless is widel;y available, inexpensive an works
very well.
Rootstocks determine the ultimate size of the tree
and have been arrived at by skilful plant breeding and trial and error
over a century or more. In Britain, the main varieties of APPLE
rootstock are
(M is for Malling, MM is for Malling Merton, after the research
stations where these clonal stocks were developed)
M27 (smallest-use for cordons, pot
grown trees, large growing trees for a small garden)
M9 (small to medium, as for M27 in
richer soil, pyramid, dwarf bush)
M106 (medium-fan or espalier,
free standing pyramid or bush, half standard in good soil)
M26 (medium-large, as MM106 in poorer
soil, half standard, large bush, standard tree in good sol)
M111 (larger, as M26 but bigger)
M25 (largest, large standard trees you
expect to take 8-10 years before they start cropping but then crop for
100 years)
Different rootsocks are available in the USA and Australia etc, I can't
speak about them but the principles remain the same. I use MM106 for almost everything.
Below are some links to pages where I illustrate with photographs some
different grafting techniques.
Recommended books, Raymond Bush 'Tree Fruit Growing-volume 1,
apples and pears ' (Penguin, long out of print), and R.J.Garner 'The
Grafter;'s Handbook' ISBN0-304-34274-2) available from specialist book
stores. I taught myself to graft from books and trial and error, it was
easy although took a little while to get consistently good
results-practice makes perfect. There might come a time when this
skill, and the ability to raise fruit trees by hand, is worth
more than it is in these days when oil is still relatively cheap and
the supermarkets are full of 'permanent global summertime' foods.
whip and tongue graft
top grafting (various techniques)
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