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| Hi there... was wondering if anyone could tell me what seems to be the problem with the foliage on my cherry plum ('chum') tree? It's a young tree and I planted it a month ago. In the last 10 days the leaves as you will see from the video (follow URL accompanying message) have burnt or speckled holes through them.
I live in Montreal, Quebec, Canada if that helps. It's supposedly a cold hardy tree. It's zoned 2 to 3. If you can diagnose the problem what's the solution? Many thanks. |
Here is a link that might be useful: Cherry Plum Tree Foliage Problem
Follow-Up Postings:
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- Posted by konrad___far_north 3..just outside of E (My Page) on Fri, Jun 1, 12 at 23:05
| Not sure,..it could be Shot Hole Disease, a bacterial pathogen. |
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- Posted by scottfsmith 6B-7A-MD (My Page) on Sat, Jun 2, 12 at 9:45
| I agree it looks like shot-hole, aka bacterial spot. Treat with dormant copper at leaf fall and again right before bud break in the spring. Google the term to read up on the disease. Scott |
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- Posted by treenation none (My Page) on Sat, Jun 2, 12 at 11:56
| Thanks for your insights guys. After reading up on shot hole disease I think that's what it is. But I don't like the idea of sitting around for a few months and only taking action in the fall. A few things: 1- Is there anything I can do now to kill the disease? 2- If not, is there anything I can do now to prevent the further spread of the disease throughout my tree? 3- What can I do to prevent the spread of the disease to my neighbouring fruit trees/plants (i.e. asian pear, european pear, other chum tree, raspberries, strawberries, grapes)? 4- Should I remove and burn all damaged foliage? Prune the tree? Thanks again |
Here is a link that might be useful: Cherry Plum Tree Foliage Problem
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- Posted by scottfsmith 6B-7A-MD (My Page) on Sat, Jun 2, 12 at 12:08
| If there are enough non-damaged leaves it helps to remove the damaged ones. I have heard various proposals for other sprays to use in growing season but have not seen a convincing enough case for any of them. Scott |
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- Posted by scottfsmith 6B-7A-MD (My Page) on Sat, Jun 2, 12 at 12:09
| Oh I forgot about your question 3. Your other chum tree is susceptible but none of the others - only stone fruits. Scott |
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- Posted by konrad___far_north 3..just outside of E (My Page) on Sat, Jun 2, 12 at 19:51
| I think a healthy tree can overcome this problem,...had it on a plum tree once, so then I wanted to make a drastic change in diet/nutrient in the soil to see if it might work, not knowing what was lacking, this tree had also funny whitish leaves like mildew, I then dumped about a 100lb of cast iron shavings from the machine shop around, the tree has been good since. |
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- Posted by scottfsmith 6B-7A-MD (My Page) on Sat, Jun 2, 12 at 23:37
| Konrad is right, healthy trees can fight back and don't get spot as badly. I didn't notice the tree was a recent transplant, that means it is highly susceptible since it lacks good vigor. I would not worry so much, once the tree gets going it will be much more resistant to the disease. Scott |
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