Oak Problem

[Jesse]

Frost or Bacterial is what I was thinking, as said though one out of the 3 isn't doing too badly and is in a similar position to the others so I would think that if frost was the cause they would more than likely be in the same condition.

 

Not necessarily, trees are some times planted in 3's or groups in the hope that one will survive, or one of the trees has a slightly stronger gene than the other runts (pardon the expression) or the other 2 have sheltered the one healthy tree. Just my thoughts .

[Jesse]

I was also going to suggest Provence as being another consideration as to why the trees are developing this way,being native to Japan/Korea elevation of Provence could influence how the trees develop in this country , but I'v just been looking at a few other possible causes and Aphids could also be the cause, Try looking up Drepanosiphid aphid, I'm not sure if its in the UK but its interesting how it feeds and effects a trees development .