Streptocarpus 'Thunder Blue'
Photo by Peter Yaremko
courtesy Betty Tapping
Increasing numbers of double-flowered Streptocarpus are being introduced each year, and this cultivar is a good example of the "state of the art". Truly full doubleness has yet to be achieved, but is only a matter of time.
I will admit that I am not a great admirer of double flowers in this genus, but perhaps I can be persuaded.
Note the habit of this plant. While it is vigorous and reasonably floriferous, the growth of the leaves has obstructed the development of some of the flower stalks. I think it is important to take out leaves that threaten to get in the way, and to manipulate those left so that the flowers can emerge from the centre of the plant in a dramatic fashion. On the other hand, the "natural" look is popular with many growers (and easier to achieve).