I just planted “Tower Power” this spring so can’t truly evaluate it yet. However, I did note that even as a first-year plant it displayed very good tolerance to drought and heat. It is in a spot that dries out fairly quickly and receives more sun than it probably wants, and yet it never looked very stressed or wilted.
According to my records I tried setting three pods on it but they all aborted.
In my landscape the backdrop for this plant is a very large, green-leaved and red-flowering Weigela shrub, which I think is a perfect match for the bloom height and color. It is also close to the driveway where I am hopeful its fragrance will be noticeable to me and visitors.