Years ago, I ditched Zona Rosa because it was a very inconsistent doubler (to put it mildly) here. Knock Your Socks Off never grew well here. Gleam of Time is growing, but hasn't impressed me; it's still a young plant, but I suspect will be leaving.

Thanks for the heads up. I also have Gladys Campbell and she hasn't doubled as much this year so I thought it might be the weather affecting it? She has always been consistent double for me. Marg

Zona Rosa has been a very consistent double for me here. However I did dig it up and split it this summer and some of the blooms I saw afterwards were singles. So wait until next year and see what happens. I love it. Here is mine.

Gladys Campbell is very inconsistent as is On the Double. A great double is Lacy Doily. I bought it at a garden centre many years ago and don't even know if it is registered but it is wonderful. I don't think I have ever seen a single bloom on it.

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Gladys Campbell has been very consistent for me. I've never heard of Lacy Doily but it is very pretty. Marg