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Why does my Iceberg have two different blooms?

9 years ago

I recently purchases a climbing iceberg for a sunny spot beside my deck. Some of the roses opened up today and I was disappointed to see two different types blooming: some stalks have iceberg roses but the stalks in front are showing rugosa type blooms.

What is this and what can I do about it? It's a healthy plant that I bought at my local gardening centre; it wasn't bare root but came in a container. Was the iceberg grafted on a rugosa stock?

The advice on forums was conflicting: one advised cutting the unwanted stalks because they are wild and will grow to overtake the iceberg. Another forum cautioned against any pruning for the first 2 years of the plant's life.

Some background: I'm a newbie gardener with limited rose experience, in Toronto (Cdn Zone 5b),

Any advice would be appreciated, thank you!

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