It's a hardy shrub and generally disease free. You may want to control its size occasionally, in which case, either prune in spring so it makes fresh growth or tidy it up once flowering finishes later in the year.
Vendée - 20kms from Atlantic coast.
"The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
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Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.