Hi Wendy and welcome to the forum 😊 Most acers are better off with dappled shade as well as being sheltered from the wind. That’s probably been frazzled by too much sun. .
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Full sun will damage leaves especially if newly planted as it hasn't got the root network of an established Acer. You are also being much more generous than I am with mine!
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Most acers are better off with dappled shade as well as being sheltered from the wind. That’s probably been frazzled by too much sun. .
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.