Whats this? mildew stuff?

[hiluxstihl]

I dont know what this is. Im not an arborist or have any knowledge of sameor treatment. serious answers please. I planted two Oak trees in 2006 noticed this this year

[felixthelogchopper]

AOD/Phytopthera?

[sloth]

Or honey fungus...

 

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[Adam M]

Or honey fungus...

 

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Yeah that. Due to keen mowers.

[gensetsteve]

why do keen mowers cause this ? is that why you stop grass from growing near the trunk

[hiluxstihl]

remove or treat?

[difflock]

keen mowers damage the bark, thereby allowing the pathogen an entry.

[Adam M]

keen mowers damage the bark, thereby allowing the pathogen an entry.

 

Yeah, mowers/strimmers tickling the butt.

[Paul Cleaver]

check under the bark for black "bootlaces" or white a Mycelium sheet - any presence of either would be consistent with honey fungus.

 

are there any other trees or shrubs nearby with these symptoms - are there any old dead stumps nearby - the disease can spread from infected hosts through the ground.

[gensetsteve]

keen mowers damage the bark, thereby allowing the pathogen an entry.

 

Thanks for the info I have been planting trees around my place but know very little about them. I would imagine rabbits dont help either I have tree guards on everything.