Posted: 12/08/2016 at 14:49
Oh dear, they do look sad. I'm afraid they're dead. They look quite large.
Keeping newly planted, large trees alive through the summer is tricky, a balance between enough water and too much. They like it quite moist, but not to excess, just enough that the soil doesn't dry out.
A couple of small specimens, planted bare root in winter, would stand much more chance of survival.