Posted: 10/07/2014 at 21:27
I grow two varieties including stainless steel,,,,,my favourite but it's slightly later in flower.
The other, unnamed variety, is rich purple and now flowering.
They need good moisture and a little shade. Cutting back will make no difference to flowering the next.
So, it will flower soon or the buds have been affected ( pests) or it has been deprived of water
Its advisable to stake them too......I do this when growth is half way. No sign of stakes now