I agree with Tracey. My Cytherea is terrible this year. The heat causes the flowers to droop and wilt within 3 days. Being in the shade in the afternoon does not help either.
Nick, sorry to say that Halleigh's Hallelujah is a disappointment for me (at least for this year anyway) The plant is extremely floriferous but all the flowers are single and they don't last long. I hope it fares better in your location as your weather is not as hot. Cora Louise is the same, blooms don't last long. The longest lasting itohs are the double ones like Bartzella, Hillary, and Magical Mystery Tour.
