Maple tree limp, dead branches...help pls
- Thread starter August44
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Help pls, I know someone out there knows what this is.
Michigan Tree Murderer
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The steam and leaf looks frost burnt to me, but I assume you'd know if that happened.
Thanks for the reply. No frost as they are in a heat controlled shed. Knowing me, I would guess it has something to do with water.
bwaynef
Masterpiece
Were the trees that are affected repotted this spring?
Michigan Tree Murderer
Masterpiece
Maybe 
River's Edge
Masterpiece
A possibility is verticillium wilt. Other soil borne pathogens, fungal issues from overwatering are a possibility! Cut off and remove affected areas, disinfect tools and burn the parts removed, Isolate the affected plant until you can be sure of the cause.
If you notice black in the tissue of the cut stems it is likely verticillium wilt. Not really possible to diagnose fungal disease without actually examining and testing the plant tissue.
Sorry couldn't have been of more help.
If you notice black in the tissue of the cut stems it is likely verticillium wilt. Not really possible to diagnose fungal disease without actually examining and testing the plant tissue.
Sorry couldn't have been of more help.
Dav4
Drop Branch Murphy
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Good question. Also knowing when the repot was done (if it was repotted this year), soil makeup, where it’s been over the last few months (all in the heat controlled shed vs 2 stepping, etc.), frequency of watering as well as any applied chemicals or fertilizer would be helpful.
No they were not. been in their pots for several years
No repots. Water when needed but maybe to much as is my norm. Spray all maples with fungus every 2 weeks. The affected areas (a very few leaves and stems on the one tree just dry up and turn to almost dust. Other maple trees in same area not affected and the one that was affected had the two problem areas dry up and wither away. No black showing anywhere. Soil is mainly Pumice, Lava and a very few organics. Not at all rootbound.
bwaynef
Masterpiece
I asked because last year when I repotted young trees (just past seedling) a little early ...so they stayed cold (not freezing though) & wet for a little while before spring actually sprung, they behaved similarly to this. Of 25 or so I repotted, I lost 18-20. After lots of research I attributed it to a particular fungus I can't recall specifically. That said, your situation seems to be different than mine so I'm not sure it applies.
What temps are you keeping them at in storage. What are you spraying them with? What kind of air movement/light do they have?
It could be Pseudomonas (which doesn't always show blackening on such young material) or Verticillium as mentioned above. Looks like Oregon State does plant disease testing ...for $70. Clemson does it for $30 (out of state, $20 in state). There might be other options as well, if you're serious about wanting to know what you're dealing with.
Until you know for sure, I'd be obnoxious about sterilizing (with alcohol) between cuts on maples. Increase air movement and spacing as well.
What temps are you keeping them at in storage. What are you spraying them with? What kind of air movement/light do they have?
It could be Pseudomonas (which doesn't always show blackening on such young material) or Verticillium as mentioned above. Looks like Oregon State does plant disease testing ...for $70. Clemson does it for $30 (out of state, $20 in state). There might be other options as well, if you're serious about wanting to know what you're dealing with.
Until you know for sure, I'd be obnoxious about sterilizing (with alcohol) between cuts on maples. Increase air movement and spacing as well.
These maples have been in the same place all winter long. Temps never below 35 F and constant 10" fan. This has only happened once with two new growth branches/leaves on one tree. The same trees in the same area no problems. I have sprayed with Copper Fungicide 3-4 times so far this spring. The shed where these and other trees are goes from 38-50 F depending on weather. The door and maybe windows open when outside temps are above 50 F. I do my best to try and take care of these Maples. I'm not into babysitting. I would like to know what the problem is so I could correct it, but with all the care I have given them, and they want to die, so be it.
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