Tink,
If hope this can help. I live in northwest Montana and have both black and yellow sambucus. I have had Southerland Gold for about quite a few years now. When I planted it I wasn't aware that it would suffer in the hot sun so I put it where it gets a lot of sun in the afternoons. Until the weather gets hot it is strikingly beautiful, But it's
leaf edges do turn brown and suffer from the summer heat. So I would suggest that you try to find a place where has protection from the summer sun.
Also, My newest baby that I just purchased, is a Nova Canadensis Elderberry for berries instead of beauty. They make delicious jam and I have never yet had a berry on my ornamentals, not so sure they do produce many berries. Ummm Can't wait!
Enjoy. Patsy