Superior and toka plum grafts on santa rosa plum





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Hello,
These are my two cleft grafts on my plum tree. The grafting tape fell off both of them. I’m a little concerned how the wood is splitting on both. I was wondering if I should put grafting tape or tree sealant on for the winter?
Hopefully the splitting is normal for cleft grafts.

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Here are some better shots of the toka graft

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It looks like the Santa Rosa doesn’t accept those plums very well. Normally the unions completely mend over. I think Toca is a combination of American plum sand Cherry and Japanese plum. Maybe there’s not enough Japanese plum to give good compatibility.

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The grafts are extremely vigorous in terms of vegetative growth. Does that not matter?

Also the grafts look really good at their primary sites/sides of the branch. This is the other side of the branch where it is filling in.

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Superior


Toka

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I’m viewing this on a call phone so maybe it looks worse. If the other side is mending and has covered the joint you are probably OK. I wouldn’t try to seal the joint. It’ll harbor rot. My biggest concern is having a lot of vigorous growth and break at the union. If the union looks like it can’t support all the new growth prune it back. I know you hate to do that when you are excited to see a new graft grow but you don’t want to loose the whole thing either.

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I see your new pictures now. The compatibility looks real good. Depending on how much growth you have above the union you may still want to consider trimming it back if it looks like it could break .

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I have been pruning the growth the entire summer. I plan to significant trim the branches in the early winter.

I have noticed santa rosa, superior, and toka all like growing vertically, i.e, vegetative growth. It’s very frustrating to get good horizontal growth on these varieties. High maintenance and patience are required.

Also all are black knot susceptible.