Looking for somewhat narrow(ish) and upright deciduous azalea to plant between two purple Rh. Boursault.
Their centers are 9-10' apart and I need something to fill in and preferably be taller (at maturity) than those two rhodies, which are not pigmies by itself either.
Another required attribute, it has to bloom either very early, say like mucronulatum, or very late, say September or later.
I was thinking about viscosum, but I've read they would need more than ordinary watering and this will be a problem in that location.
Counting on your wisdom!