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Grafting · Hydroponics Daily

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  Hi, welcome back to Hydroponics Daily with me, Dr. Russell Sharp,
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  the inventor of gold leaf, the one fertilizer that will get you from seed to
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  harvest with just one bottle.
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  That's the plug out of the way. We're going to talk about grafting today,
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  which is another propagation technique.
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  And for certain plants, it's the main propagation technique.
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  So here you get a plant that's rooted and normally a young sapling,
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  and that's referred to as the rootstock.
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  And then you take a plant with completely different
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  or slightly different genetic makeup a different
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  variety or a different strain or a
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  different even a different species sometimes and you
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  take a small section with the bud on and
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  you put that on top and it's referred to
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  as the scion and that's the bit that will grow away so this
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  bit will be the roots and lower stem and this bit
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  will be the foliage the fruits the flowers so you
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  you cut them at an angle like you would with the cutting
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  to increase the surface area and this
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  and the increase the chances of the of it forming
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  a good graft union that's called the graft union there
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  and then you might wrap it with tape or you might seal it
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  with wax and then the the cells that
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  divide in this area the cambium they form
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  together and they meld and the xylem will connect and
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  the phloem will connect and then the sap will run in both
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  directions and you'll it will act
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  as if it's one plant however it is genetically
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  it's two different organisms just like.
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  If you had your hand somebody's hand grafted
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  onto you so the rootstock and the
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  scion and they you would do this because both are
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  giving you features that you want in the combined plant
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  so rootstocks often in apples you'll
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  have rootstocks that will determine the size of
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  the of the actual tree so you
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  might have a dwarf rootstock for a garden or you
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  might have a very vigorous rootstock for a
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  poor growing an orchard in a poor
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  soil in tomatoes you might
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  have a rootstock that is cold tolerant so
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  tolerant to cold soils or very
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  often you might have a rootstock that is tolerant to a pest or
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  a disease now the rootstock doesn't imbue
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  any features onto the scion so this scion
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  is normally chosen because it's got the the particular flowering or
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  fruiting or vegetation that you want in the in
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  the in the foliage and the rootstock
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  say the rootstock's from a purple flowering or fruiting
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  variety you won't get purple suddenly flowers on
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  this plant it'll be whatever the scion is so very few features travel up the
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  plant and the scion will then hopefully this graft union will form and hopefully
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  it will stay around for the life of the plants they can fail so you do get graft
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  union fails so things like plum trees cherry trees you'll see the.
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  Over the years, they start to grow a bit bigger. They might catastrophically
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  fall over when they've been what's called topworked, where the graft is quite
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  high up at the plant, maybe six feet up on the plant.
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  And so that's an issue. Where else do we see grafting a lot?
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  Roses. Roses are grafted. And one of the issues you have to make sure to look
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  out for with roses and any sort of grafting plant is suckers coming up from
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  the mother plant and overtaking.
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  And the scion material because this, in roses, this will not be an ornamental
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  rose variety. It'll be just the rootstock, bug standard flowers, not very nice.
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  And then this will, eventually the graft union will fall and die off because
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  the rootstock doesn't need it anymore.
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  So you always have to cut those suckers as they're referred to off in many plants.
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  Some plants that's more often than not. So most cherries, really good roses,
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  wisterias they'll be they'll be grafted the more
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  expensive ones if you're thinking why is this one more expensive often it's
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  grafted you can see the graft union and in tomatoes it you'll you're now starting
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  to see a lot more grafted tomatoes coming to the market and you can do as i
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  said you can do well let's talk about that tomorrow got an interesting thing
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  about grafting for tomorrow that's been hydroponics daily for today.