..which don't appear to be a normal feature of this tree's leaves, at least according to the pictures on Wikipedia (I'm no botanist).
We've only moved here for a few months, so am not sure whether it has always been like this or whether the tree only got infested in the last period.
Does the leaves' degradation + non-fertile ground around its root, signal that the tree is sick? If so, is there some "medicine" I can get for it myself, or would I have to speak to the administrators of the garden? Thanks in advance for any thoughts!