Tetra!
‘Goldsmith’ (LG) is our new strain of tetra Trumpets, with flowers of sumptuous golden yellow filling the garden with their fragrance.  Statuesque stems support huge, long-lasting flowers.  These tetraploids have robust stature and terrific substance, and grow taller and more floriforous every year.   
4 to 5 feet (first season), early July. 

Hardy in Zones 4 - 8
(In zone 4, mulch well and protect from late spring frosts.)