Hanging on to old leaves.
No interactions present.
The retention of dead leaves on a normally deciduous tree is known as marcescence. It is normally the leaves near the ground which are retained and can be quite an obvious feature in a beech hedge, for example.
Cool word Mr G - thanks.
THREE MARINE PROJECTS
Have you considered that you may have hybrid oak? Which can be quite variable.
Lat/Lng: 52.622983333333, -0.51748611111111
OS grid ref: TF004038