My acer family

That's a lovely trio of Acers. The only problem I found affected mine was wind burn, but moving a couple to a different area solved the problem. Good luck with them.

Beware: I've found they are addictive! We have amassed quite a collection in just 3 years.

I have quite an exposed garden and will see how I go. Would love them to grow big and plant them out in the garden.

Love your trio of gorgeous Acers, Ams!!! Look perfect in those pretty pots too.
They are susceptible to wind burn like Shirley mentioned, but you've got them placed in a lovely sheltered spot. I've all mine planted out, I think I just thought, I'd risk it. They do need a lot of water when potted.
Enjoy, they look gorgeous!
Ps. Love your path/pavers with the ? Mile a minute plant? I've some on the rockery.