Japanese Maple - crisping leaves
New here, both in terms of this forum, and to gardening in general!
I have a small Japanese Maple 'Skeeters Broom' that was purchased earlier in the year. I have been away for a few weeks and come back to it suffering from browning and crisping leaves. It's still growing as you can see from the new red growth, and the branches have buds on them.
It is situated in the container you can see, against an east facing fence. The fence protects it from harsh winds, but it gets the full blast of morning to midday sun. I haven't watered it excessively but not let it dry out, and the recent crappy weather kept it moist. I haven't fed it anything.
Is the sun the major issue here?
And on a minor point, are they supposed to lose their lovely red colour?
Many thanks in advance