Grafting Update. 4.17.19

First Growth, Northpole Apple on Bud-9 Rootstock.  4.17.19

First Growth, Northpole Apple on Bud-9 Rootstock.  4.17.19

This is the update for tree grafts that I did this late winter.  Almost all have pushed out buds.  As is usual for me, all of my grafts this year were whip and tongue grafts.  I like how straight-forward the method is, once I knew how.  I think any method with good cambium contact, and with good strength, will work.  By using whip and tongue method, if there is a good match in size of scion and rootstock or understock, the cambium heals all around and new bark forms, so there is no bare wound remaining.  The method would not work so well if there is a big mis-match of size between scion and stock, in which case cleft grafting or bark grafting would be better.  But for me, it's almost always whip and tongue.

This year, all of the plum grafts are looking good.  It's only 2 varieties, 3 grafts - two for Black Ice and one for Beauty.  I'm glad to get to try Black Ice, but have some doubts.  Black Ice is an American x Asian plum hybrid, and most of the ones I've grown, so far, bloom but don't set fruit.  I read they need American Plum as a pollinator.  I don't know why Asian plum, which I have a lot of, won't work.  But so far, only Toka has produced.  And that one is almost gone from a canker infestation.  These are grafted onto a tree of Ember, another Asian x American plum hybrid that has never fruited.  The tree also hosts a seedling variety that bloomed this year but doesn't appear to have set fruit.  This tree was created as a graft I did about 6 years ago, grafting Ember onto a cutting of Hollywood plum. 

It's interesting to see one of the Bud-9 (Budagovsky 9, a cross of M.8 x ‘Red Standard’ AKA Krasnij Standard) rootstock pushing some leaf buds on the columnar apple tree grafts that I made.  Apparently Red Standard is also called Red-leafed Paradise or Bud 9, pruduced by Michurinsk College of Ag, Michurin, Russia, in 1946.  I'm guessing there is some Antonovka in there somewhere.

Regardless, it's interesting to see the growth.

Kiwis are more difficult.  The stems are hollow, with a delicate pith center and thin layer of wood with delicate cambium.  I struggled to get these to match, and wrapped firmly.    The other challenge is knowing which way is up.  I don't think they will grow if grafted upside down.  I did some one way, and some the other.  Looks like a couple of those took.

Fuzzy Kiwi Male Whip and Tongue Graft.  4.17.19

Beauty Plum Whip and Tongue Graft.  4.17.19

 I think this growth is more than the small amount of sugar stored in the little kiwi stick can support.  Therefore, I think this graft took.

It will be interesting to see if any of that growth on the quince multigraft, is a precurser to flowers.  Of course, I won't let the grafts produce any fruits.  But one of the branches was left ungrafted, so I can allow that to make a fruit if it blooms.

I'm very happy with this method of wrapping the grafts.  As described earlier, I used strips made from freezer plastic bags, and over-wrapped the scion ends with parafilm.  They are all looking good.

Black Ice Plum Whip and Tongue Graft.  4.17.19

Quince Whip and Tongue Graft.  4.17.19

Quince Multiple Trunk Tree, Multiple Whip and Tongue Grafts.  4.17.19