I've inherited an apple tree growing in heavily polluted ground (tailings and spoil from copper/tin mining).
The tree is fruiting with nice sweet cooking fruit, but is absolutely covered in lichen and what appears to be a fungal infection.
This doesn't look like apple canker to me, I've not seen these big galls before, but I've only seen relatively new apple canker infections. I suppose the tree could grow over the canker year on year to create these protrusions?
So is this an apple canker, and if not does anyone know what it could be? I'm in Cornwall, UK if that helps.
I don't have much hope of treating it as it's so systemic, but I want to know how careful I should be to prevent transmission to other trees.
Thanks for your help!
