in this group we have Longiflorums and Longiflorum-Asiatic crosses, all are scented, but LA crosses have a very light scent

Orientals flower from late June to September depending on the variety, and need a nice free-draining acidic/ericaceous soil or compost

Oriental trumpets are scented like their parents but are easy to grow in both alkaline and ericaceous soils, as long as they don't get water-logged in the winter.