This rose is almost 100 percent clean here for me and weather tolerant - i.e. very wet, or very dry.. yesterdays' near 100F heat seemed not to trouble it.. it also has a musky sweet fragrance, very pleasant, not powerful..
... For future reference, if you live in a black spot prone area and can obtain this rose, then it should work out for you I think, unlike some other Tantau roses I have here..
Aquarell/Perfect Harmony - sport of August Luise - black spot 50 percent after the first flush.. partly defoliates..
Eisvogel - totally defoliated after the first flush... wonderful scent, gorgeous blooms otherwise..
Lavender Ice - clean but no scent to speak of.. outer petals discolour in wet weather..
..just an update on a few of their roses I've tried.. I find these roses a bit of a strange breed if I'm honest and can't make my mind up totally how much I like them..