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Trees, Shrubs and Conifers: My showy Mountain ash trunk is rotting

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Forum: Trees, Shrubs and ConifersReplies: 3, Views: 45
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Brooklyn Park, MN
(Zone 4a)

June 16, 2013
3:24 PM

Post #9561283

It has mushrooms growing on the trunk,I have only had the tree 2yrs now.There is a lot of new growth and flowers on it right now.Do you guys think it will die?Is there anything I should do?

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Lititz, PA
(Zone 6b)

June 17, 2013
11:56 AM

Post #9562354

Ok, let me ask you this question...does your dog urinate on the trees? I would also ask the same questions about your blue spruce now that I know you have a dog. I used to work at a veterinary clinic and in the landscaping was a bird's nest spruce that would continually get urinated on by the dogs. It died as a result. I think it had to do with the acidity of the urine.

The ash looks like it may have a canker. Cankers can either be caused by bacteria or fungus. You could try treating it but it looks pretty large for such a tiny tree.

Good luck!

This message was edited Jun 17, 2013 9:16 PM


United Kingdom
(Zone 9a)

June 17, 2013
4:23 PM

Post #9562632

Agree that canker / diseased patch on the trunk doesn't look good. Possibly sunscald followed by fungal infection of the dead bark and wood. Don't think the dog's responsible, the damage is too high.

The tree is a rowan (Sorbus), not an ash (Fraxinus).



Brooklyn Park, MN
(Zone 4a)

June 17, 2013
8:29 PM

Post #9562914

The dogs pee on the grass,thats why I have a lot of dead grass lol.I know it's kinda weird having 2 boys put yeah they both pee in the middle of the yard.Okay so canker alright that sucks.

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