I wonder if you can narrow the ID options for my neighbor's double white with great strong fragrance - I first thought that it is Festiva Maxima, but have some doubts. Now I am "suspecting" Madam de Verneville... I would say strong performer, mid to high size of the bush, strong stems, but need staking when flowering. I think the flower is more "compact" compare to Festiva Maxima and leaves are slightly smaller.
