Small Apple Tree

[adik]

I've got a small new apple tree in a patio pot and the leaves have developed orange spots. Can anyone tell me what would cause this ?

[ladybirder]

Does this help?
https://www.rhs.org.uk/advice/profile?pid=756

[murraymints]

https://www.ornamental-trees.co.uk/dwarf-apple-trees-planting-pruning-care-i59


look here ?

[adik]

Thank you to you both