disease on my maples branches

11 years ago

Well I need an ID on this disease my maple has right now. Everything was going and growing fine until last week or two when it seems half of my 6+ yr old maple died off. The branches were turning black and the leaf decayed from the inside out. I cut off the infected areas, threw them far away, as instructed to do by my friend because his mom knows what this disease is. She told him and I that we should be very careful with it, but unfortunately she has passed, so I lost the ID.

Any ideas? I know this one but I cannot for the life of me remember the name and treatment methods.

Thanks all!

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Comments (3)

gardengal48 (PNW Z8/9)
11 years ago
Really need to see photos to correctly diagnose disease issues. Rapid branch dieback is often attributed to verticillium wilt but leaves decaying "from the inside out" doesn't really fit nor does the branches blackening.....at least that rapidly.

Post photos of the tree with as much of a close up of the affected area/plant tissue as you can manage and we'll do our best. If it IS VW, there is nothing you can do.
sketch804
Original Author
11 years ago
well the best I can do is this one picture I have of it. yes I believe I looked that disease up because it was the only one I could think of that had the blackening of the stems, but I am not sure if that is it or not.

http://farm6.staticflickr.com/5337/7410861688_4584f6e2ef_c.jpg
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gardengal48 (PNW Z8/9)
11 years ago
Hard to tell from that photo but the problem looks much more like Pseudomonas than anything else. Lots of info online on how to control. Generally, spraying is restricted to the dormant season and removal of affected branches/stems is the usual method. Make sure you are sterilizing your pruners between cuts and don't prune during wet weather.