How well does Diamond Frost Euphorbia grow indoors?

I saw a cute holiday container garden planting idea where they combined a Red Poinsettia with Diamond Frost Euphorbia growing around it. So I planted them together in a container and now the Diamond Frost is starting to wilt. Will these guys grow indoors? What kind of care do I need to be giving it?|||Poinsettias are desert plants and need little water and desert frost is drought tolerant but needs a lot of water when first planted. Try seperating them until the desert frost is established, then add the poinsettia.