Had to look that up. On paper it seems ideal for your area.

More info might help. How long ago were they planted and from what source? Have you checked all the cultural requirements like soil, light, fertilizer and watering?

Thanks Carol, I purchased from 3 different nurseries and they were planted 3 mos ago. As far as checking the cultural requirements, I can't find a source of information that spells out what these plants like. Any suggestions?

Carol, What works for you to determine pH level in the soil?

I have one and know that they like alot of sun and regular watering to bloom. Mine faltered in the beginning until it grew taller than the plants around it. It was reaching for the sun. Only the woody stems that get sun bloom with the pretty white flowers. Sorry to be so non-technical, but this is all I have to offer. Good luck!

Oh, and also, I sprinkle a little Dynamite fertilizer around the base every few months. Hope this helps!

sider mites???? that can make many plants lose their leaves over night

About a year ago I planted mine in the ground in front of my house. They are doing great.