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Weird growths on my apple trees

 
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Location: Adelaide, Australia
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Hi all,

I have some weird growths on my apple trees.
Do you think I should be worried?
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pollinator
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Some apple varieties are fond of growing lumpy and warty things like this. Several of my trees have them and it's never appeared to cause any problems. A few of them are growing full-blown burls, with a mass of fibrous roots attached. I suppose if I wanted to I could layer these or maybe even cut them and grow new trees, but haven't tried yet.

These ones are downright suggestive, I have to say....
 
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Hau Alex, Those appear to be fungal infections, you would need to section and inspect under a microscope to be certain.

Some fungi infections are benign but some can be big trouble.
Watch the bark area around each of those and if they start to discolor or change texture, it would be time for testing.

Redhawk
 
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